22010021121 has 24 divisors (see below), whose sum is σ = 32268268480. Its totient is φ = 13334793120.

The previous prime is 22010021119. The next prime is 22010021123. The reversal of 22010021121 is 12112001022.

It is an interprime number because it is at equal distance from previous prime (22010021119) and next prime (22010021123).

It is not a de Polignac number, because 22010021121 - 2¹ = 22010021119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22010021097 and 22010021106.

It is not an unprimeable number, because it can be changed into a prime (22010021123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1248315 + ... + 1265823.

Almost surely, 2^22010021121 is an apocalyptic number.

It is an amenable number.

22010021121 is a deficient number, since it is larger than the sum of its proper divisors (10258247359).

22010021121 is a wasteful number, since it uses less digits than its factorization.

22010021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20997 (or 20986 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22010021121 its reverse (12112001022), we get a palindrome (34122022143).

The spelling of 22010021121 in words is "twenty-two billion, ten million, twenty-one thousand, one hundred twenty-one".