10211122021 has 16 divisors (see below), whose sum is σ = 10770529536. Its totient is φ = 9661550976.

The previous prime is 10211121997. The next prime is 10211122043. The reversal of 10211122021 is 12022111201.

It is a cyclic number.

It is not a de Polignac number, because 10211122021 - 2¹⁷ = 10210990949 is a prime.

It is a super-2 number, since 2×10211122021² (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 = 10211121992 and 10211122010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211122081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2824411 + ... + 2828023.

It is an arithmetic number, because the mean of its divisors is an integer number (673158096).

Almost surely, 2^10211122021 is an apocalyptic number.

It is an amenable number.

10211122021 is a deficient number, since it is larger than the sum of its proper divisors (559407515).

10211122021 is a wasteful number, since it uses less digits than its factorization.

10211122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10211122021 its reverse (12022111201), we get a palindrome (22233233222).

The spelling of 10211122021 in words is "ten billion, two hundred eleven million, one hundred twenty-two thousand, twenty-one".