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30020211012 = 223111012251741
BaseRepresentation
bin11011111101010110…
…000001000101000100
32212111011022201200010
4123331112001011010
5442440133223022
621442513150220
72111633404041
oct337526010504
985434281603
1030020211012
1111805698950
12599985b370
132aa562058c
14164adca1c8
15baa7bc50c
hex6fd581144

30020211012 has 48 divisors (see below), whose sum is σ = 77171701824. Its totient is φ = 9006960000.

The previous prime is 30020210959. The next prime is 30020211019. The reversal of 30020211012 is 21011202003.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (30020211019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1112539 + ... + 1139202.

It is an arithmetic number, because the mean of its divisors is an integer number (1607743788).

Almost surely, 230020211012 is an apocalyptic number.

It is an amenable number.

30020211012 is an abundant number, since it is smaller than the sum of its proper divisors (47151490812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30020211012 is a wasteful number, since it uses less digits than its factorization.

30020211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251860 (or 2251858 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 30020211012 its reverse (21011202003), we get a palindrome (51031413015).

Subtracting from 30020211012 its reverse (21011202003), we obtain a palindrome (9009009009).

The spelling of 30020211012 in words is "thirty billion, twenty million, two hundred eleven thousand, twelve".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 101 132 202 303 404 606 1111 1212 2222 3333 4444 6666 13332 2251741 4503482 6755223 9006964 13510446 24769151 27020892 49538302 74307453 99076604 148614906 227425841 297229812 454851682 682277523 909703364 1364555046 2501684251 2729110092 5003368502 7505052753 10006737004 15010105506 30020211012