21022101031 has 8 divisors (see below), whose sum is σ = 21049664400. Its totient is φ = 20994556800.

The previous prime is 21022101017. The next prime is 21022101091. The reversal of 21022101031 is 13010122012.

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

It is a cyclic number.

It is not a de Polignac number, because 21022101031 - 2⁵ = 21022100999 is a prime.

It is a super-2 number, since 2×21022101031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022101091) by changing a digit.

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, 4968825 + ... + 4973053.

It is an arithmetic number, because the mean of its divisors is an integer number (2631208050).

Almost surely, 2^21022101031 is an apocalyptic number.

21022101031 is a deficient number, since it is larger than the sum of its proper divisors (27563369).

21022101031 is a wasteful number, since it uses less digits than its factorization.

21022101031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9569.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21022101031 its reverse (13010122012), we get a palindrome (34032223043).

The spelling of 21022101031 in words is "twenty-one billion, twenty-two million, one hundred one thousand, thirty-one".