22031212022 has 4 divisors (see below), whose sum is σ = 33046818036. Its totient is φ = 11015606010.

The previous prime is 22031211973. The next prime is 22031212037. The reversal of 22031212022 is 22021213022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22021213022 = 2 ⋅11010606511.

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, 5507803004 + ... + 5507803007.

It is an arithmetic number, because the mean of its divisors is an integer number (8261704509).

Almost surely, 2^22031212022 is an apocalyptic number.

22031212022 is a deficient number, since it is larger than the sum of its proper divisors (11015606014).

22031212022 is a wasteful number, since it uses less digits than its factorization.

22031212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11015606013.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22031212022 its reverse (22021213022), we get a palindrome (44052425044).

The spelling of 22031212022 in words is "twenty-two billion, thirty-one million, two hundred twelve thousand, twenty-two".