22131022 has 4 divisors (see below), whose sum is σ = 33196536. Its totient is φ = 11065510.

The previous prime is 22131017. The next prime is 22131049. The reversal of 22131022 is 22013122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22013122 = 2 ⋅11006561.

It is a junction number, because it is equal to n+sod(n) for n = 22130993 and 22131011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5532754 + ... + 5532757.

It is an arithmetic number, because the mean of its divisors is an integer number (8299134).

Almost surely, 2^22131022 is an apocalyptic number.

22131022 is a deficient number, since it is larger than the sum of its proper divisors (11065514).

22131022 is a wasteful number, since it uses less digits than its factorization.

22131022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11065513.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22131022 is about 4704.3620183825. The cubic root of 22131022 is about 280.7590881892.

Adding to 22131022 its reverse (22013122), we get a palindrome (44144144).

It can be divided in two parts, 22 and 131022, that added together give a square (131044 = 362²).

The spelling of 22131022 in words is "twenty-two million, one hundred thirty-one thousand, twenty-two".