22121032430 has 32 divisors (see below), whose sum is σ = 45838305216. Its totient is φ = 7528990464.

The previous prime is 22121032411. The next prime is 22121032477. The reversal of 22121032430 is 3423012122.

It is a super-2 number, since 2×22121032430² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1143749 + ... + 1162928.

It is an arithmetic number, because the mean of its divisors is an integer number (1432447038).

Almost surely, 2^22121032430 is an apocalyptic number.

22121032430 is an abundant number, since it is smaller than the sum of its proper divisors (23717272786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22121032430 is a wasteful number, since it uses less digits than its factorization.

22121032430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306828.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22121032430 its reverse (3423012122), we get a palindrome (25544044552).

The spelling of 22121032430 in words is "twenty-two billion, one hundred twenty-one million, thirty-two thousand, four hundred thirty".