21122301031 has 8 divisors (see below), whose sum is σ = 22753165680. Its totient is φ = 19492303872.

The previous prime is 21122301023. The next prime is 21122301041. The reversal of 21122301031 is 13010322112.

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 21122301031 - 2³ = 21122301023 is a prime.

It is a super-2 number, since 2×21122301031² (a number of 21 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 = 21122300996 and 21122301014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122301001) 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, 165850 + ... + 264103.

It is an arithmetic number, because the mean of its divisors is an integer number (2844145710).

Almost surely, 2^21122301031 is an apocalyptic number.

21122301031 is a deficient number, since it is larger than the sum of its proper divisors (1630864649).

21122301031 is a wasteful number, since it uses less digits than its factorization.

21122301031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433745.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21122301031 its reverse (13010322112), we get a palindrome (34132623143).

The spelling of 21122301031 in words is "twenty-one billion, one hundred twenty-two million, three hundred one thousand, thirty-one".