21031200212024 has 32 divisors (see below), whose sum is σ = 39995252220000. Its totient is φ = 10366769204352.

The previous prime is 21031200211999. The next prime is 21031200212027. The reversal of 21031200212024 is 42021200213012.

It is a super-2 number, since 2×21031200212024² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21031200211987 and 21031200212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031200212027) 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, 60425339 + ... + 60772394.

It is an arithmetic number, because the mean of its divisors is an integer number (1249851631875).

Almost surely, 2^{21031200212024} is an apocalyptic number.

It is an amenable number.

21031200212024 is a deficient number, since it is larger than the sum of its proper divisors (18964052007976).

21031200212024 is a wasteful number, since it uses less digits than its factorization.

21031200212024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121198047 (or 121198043 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21031200212024 its reverse (42021200213012), we get a palindrome (63052400425036).

The spelling of 21031200212024 in words is "twenty-one trillion, thirty-one billion, two hundred million, two hundred twelve thousand, twenty-four".