21031201133320 has 32 divisors (see below), whose sum is σ = 54080231486400. Its totient is φ = 7210697531328.

The previous prime is 21031201133309. The next prime is 21031201133443. The reversal of 21031201133320 is 2333110213012.

It is a super-2 number, since 2×21031201133320² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21031201133291 and 21031201133300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37555716030 + ... + 37555716589.

It is an arithmetic number, because the mean of its divisors is an integer number (1690007233950).

Almost surely, 2^{21031201133320} is an apocalyptic number.

21031201133320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21031201133320 is an abundant number, since it is smaller than the sum of its proper divisors (33049030353080).

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

21031201133320 is a wasteful number, since it uses less digits than its factorization.

21031201133320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75111432637 (or 75111432633 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21031201133320 its reverse (2333110213012), we get a palindrome (23364311346332).

The spelling of 21031201133320 in words is "twenty-one trillion, thirty-one billion, two hundred one million, one hundred thirty-three thousand, three hundred twenty".