21021132301031 has 8 divisors (see below), whose sum is σ = 21117373643520. Its totient is φ = 20924922864568.

The previous prime is 21021132301019. The next prime is 21021132301133. The reversal of 21021132301031 is 13010323112012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21021132301031 is a prime.

It is a super-2 number, since 2×21021132301031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21021132300994 and 21021132301012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021132301531) 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, 6655301 + ... + 9291678.

It is an arithmetic number, because the mean of its divisors is an integer number (2639671705440).

Almost surely, 2^{21021132301031} is an apocalyptic number.

21021132301031 is a deficient number, since it is larger than the sum of its proper divisors (96241342489).

21021132301031 is a wasteful number, since it uses less digits than its factorization.

21021132301031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15953013.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21021132301031 its reverse (13010323112012), we get a palindrome (34031455413043).

The spelling of 21021132301031 in words is "twenty-one trillion, twenty-one billion, one hundred thirty-two million, three hundred one thousand, thirty-one".