22021213022 has 4 divisors (see below), whose sum is σ = 33031819536. Its totient is φ = 11010606510.

The previous prime is 22021213013. The next prime is 22021213031. The reversal of 22021213022 is 22031212022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22031212022 = 2 ⋅11015606011.

It is an interprime number because it is at equal distance from previous prime (22021213013) and next prime (22021213031).

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, 5505303254 + ... + 5505303257.

It is an arithmetic number, because the mean of its divisors is an integer number (8257954884).

Almost surely, 2^22021213022 is an apocalyptic number.

22021213022 is a deficient number, since it is larger than the sum of its proper divisors (11010606514).

22021213022 is a wasteful number, since it uses less digits than its factorization.

22021213022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11010606513.

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

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

The spelling of 22021213022 in words is "twenty-two billion, twenty-one million, two hundred thirteen thousand, twenty-two".