21120030122120 has 32 divisors (see below), whose sum is σ = 47521411560000. Its totient is φ = 8447773153728.

The previous prime is 21120030122063. The next prime is 21120030122137. The reversal of 21120030122120 is 2122103002112.

It is a super-2 number, since 2×21120030122120² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6029870 + ... + 8865629.

It is an arithmetic number, because the mean of its divisors is an integer number (1485044111250).

Almost surely, 2^{21120030122120} is an apocalyptic number.

21120030122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120030122120 is an abundant number, since it is smaller than the sum of its proper divisors (26401381437880).

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

21120030122120 is a wasteful number, since it uses less digits than its factorization.

21120030122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14930957 (or 14930953 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21120030122120 its reverse (2122103002112), we get a palindrome (23242133124232).

The spelling of 21120030122120 in words is "twenty-one trillion, one hundred twenty billion, thirty million, one hundred twenty-two thousand, one hundred twenty".