10021121512 has 32 divisors (see below), whose sum is σ = 20941977600. Its totient is φ = 4467619584.

The previous prime is 10021121447. The next prime is 10021121527. The reversal of 10021121512 is 21512112001.

10021121512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10021121512² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1936488 + ... + 1941655.

It is an arithmetic number, because the mean of its divisors is an integer number (654436800).

Almost surely, 2^10021121512 is an apocalyptic number.

It is an amenable number.

10021121512 is an abundant number, since it is smaller than the sum of its proper divisors (10920856088).

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

10021121512 is a wasteful number, since it uses less digits than its factorization.

10021121512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878185 (or 3878181 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 10021121512 its reverse (21512112001), we get a palindrome (31533233513).

The spelling of 10021121512 in words is "ten billion, twenty-one million, one hundred twenty-one thousand, five hundred twelve".