22515010022 has 4 divisors (see below), whose sum is σ = 33772515036. Its totient is φ = 11257505010.

The previous prime is 22515009947. The next prime is 22515010079. The reversal of 22515010022 is 22001051522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22001051522 = 2 ⋅11000525761.

It is a junction number, because it is equal to n+sod(n) for n = 22515009976 and 22515010003.

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, 5628752504 + ... + 5628752507.

It is an arithmetic number, because the mean of its divisors is an integer number (8443128759).

Almost surely, 2^22515010022 is an apocalyptic number.

22515010022 is a deficient number, since it is larger than the sum of its proper divisors (11257505014).

22515010022 is a wasteful number, since it uses less digits than its factorization.

22515010022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11257505013.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 22515010022 its reverse (22001051522), we get a palindrome (44516061544).

The spelling of 22515010022 in words is "twenty-two billion, five hundred fifteen million, ten thousand, twenty-two".