22420420231 has 32 divisors (see below), whose sum is σ = 25547400000. Its totient is φ = 19489397760.

The previous prime is 22420420229. The next prime is 22420420237. The reversal of 22420420231 is 13202402422.

It is a cyclic number.

It is not a de Polignac number, because 22420420231 - 2¹ = 22420420229 is a prime.

It is a super-2 number, since 2×22420420231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420420237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27044725 + ... + 27045553.

It is an arithmetic number, because the mean of its divisors is an integer number (798356250).

Almost surely, 2^22420420231 is an apocalyptic number.

22420420231 is a deficient number, since it is larger than the sum of its proper divisors (3126979769).

22420420231 is a wasteful number, since it uses less digits than its factorization.

22420420231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22420420231 its reverse (13202402422), we get a palindrome (35622822653).

The spelling of 22420420231 in words is "twenty-two billion, four hundred twenty million, four hundred twenty thousand, two hundred thirty-one".