21121126240460 has 48 divisors (see below), whose sum is σ = 44549277696000. Its totient is φ = 8411339100864.

The previous prime is 21121126240457. The next prime is 21121126240483. The reversal of 21121126240460 is 6404262112112.

It is a super-2 number, since 2×21121126240460² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22478849 + ... + 23399591.

It is an arithmetic number, because the mean of its divisors is an integer number (928109952000).

Almost surely, 2^{21121126240460} is an apocalyptic number.

21121126240460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21121126240460 is an abundant number, since it is smaller than the sum of its proper divisors (23428151455540).

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

21121126240460 is a wasteful number, since it uses less digits than its factorization.

21121126240460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925790 (or 925788 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

Adding to 21121126240460 its reverse (6404262112112), we get a palindrome (27525388352572).

The spelling of 21121126240460 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred twenty-six million, two hundred forty thousand, four hundred sixty".