22121100220022 has 4 divisors (see below), whose sum is σ = 33181650330036. Its totient is φ = 11060550110010.

The previous prime is 22121100220013. The next prime is 22121100220097. The reversal of 22121100220022 is 22002200112122.

It is a happy number.

It is a semiprime because it is the product of two primes.

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, 5530275055004 + ... + 5530275055007.

It is an arithmetic number, because the mean of its divisors is an integer number (8295412582509).

Almost surely, 2^{22121100220022} is an apocalyptic number.

22121100220022 is a deficient number, since it is larger than the sum of its proper divisors (11060550110014).

22121100220022 is a wasteful number, since it uses less digits than its factorization.

22121100220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11060550110013.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22121100220022 its reverse (22002200112122), we get a palindrome (44123300332144).

The spelling of 22121100220022 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred million, two hundred twenty thousand, twenty-two".