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30212111123 = 401377919937
BaseRepresentation
bin11100001000110010…
…000011101100010011
32212222112102021010122
4130020302003230103
5443333300023443
621513530220455
72116453464425
oct341062035423
985875367118
1030212111123
11118a3a49287
125a31b8472b
132b062ccb3c
1416686a0815
15bbc576968
hex708c83b13

30212111123 has 8 divisors (see below), whose sum is σ = 30296987280. Its totient is φ = 30127283200.

The previous prime is 30212111089. The next prime is 30212111131. The reversal of 30212111123 is 32111121203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30212111123 - 216 = 30212045587 is a prime.

It is a super-2 number, since 2×302121111232 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30212111023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1505411 + ... + 1525347.

It is an arithmetic number, because the mean of its divisors is an integer number (3787123410).

Almost surely, 230212111123 is an apocalyptic number.

30212111123 is a deficient number, since it is larger than the sum of its proper divisors (84876157).

30212111123 is a wasteful number, since it uses less digits than its factorization.

30212111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24117.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 30212111123 its reverse (32111121203), we get a palindrome (62323232326).

The spelling of 30212111123 in words is "thirty billion, two hundred twelve million, one hundred eleven thousand, one hundred twenty-three".

Divisors: 1 401 3779 19937 1515379 7994737 75341923 30212111123