10231122021 has 4 divisors (see below), whose sum is σ = 13641496032. Its totient is φ = 6820748012.

The previous prime is 10231121987. The next prime is 10231122023. The reversal of 10231122021 is 12022113201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10231122021 - 2¹¹ = 10231119973 is a prime.

It is a super-2 number, since 2×10231122021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10231122023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1705187001 + ... + 1705187006.

It is an arithmetic number, because the mean of its divisors is an integer number (3410374008).

Almost surely, 2^10231122021 is an apocalyptic number.

It is an amenable number.

10231122021 is a deficient number, since it is larger than the sum of its proper divisors (3410374011).

10231122021 is an equidigital number, since it uses as much as digits as its factorization.

10231122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3410374010.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10231122021 its reverse (12022113201), we get a palindrome (22253235222).

The spelling of 10231122021 in words is "ten billion, two hundred thirty-one million, one hundred twenty-two thousand, twenty-one".