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30020120101 = 311086789113
BaseRepresentation
bin11011111101010101…
…101010111000100101
32212111011011002222001
4123331111222320211
5442440122320401
621442511205301
72111632545016
oct337525527045
985434132861
1030020120101
1111805636614
125999816831
132aa55bb09a
14164ada500d
15baa7a0601
hex6fd56ae25

30020120101 has 8 divisors (see below), whose sum is σ = 30991710464. Its totient is φ = 29048729760.

The previous prime is 30020120071. The next prime is 30020120113. The reversal of 30020120101 is 10102102003.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30020120101 is a prime.

It is a super-2 number, since 2×300201201012 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020120201) 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, 292321 + ... + 381433.

It is an arithmetic number, because the mean of its divisors is an integer number (3873963808).

Almost surely, 230020120101 is an apocalyptic number.

30020120101 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30020120101 is a deficient number, since it is larger than the sum of its proper divisors (971590363).

30020120101 is a wasteful number, since it uses less digits than its factorization.

30020120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100011.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 30020120101 its reverse (10102102003), we get a palindrome (40122222104).

The spelling of 30020120101 in words is "thirty billion, twenty million, one hundred twenty thousand, one hundred one".

Divisors: 1 31 10867 89113 336877 2762503 968390971 30020120101