22121022122222 has 4 divisors (see below), whose sum is σ = 33181533183336. Its totient is φ = 11060511061110.

The previous prime is 22121022122197. The next prime is 22121022122233. The reversal of 22121022122222 is 22222122012122.

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, 5530255530554 + ... + 5530255530557.

It is an arithmetic number, because the mean of its divisors is an integer number (8295383295834).

Almost surely, 2^{22121022122222} is an apocalyptic number.

22121022122222 is a deficient number, since it is larger than the sum of its proper divisors (11060511061114).

22121022122222 is a wasteful number, since it uses less digits than its factorization.

22121022122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060511061113.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 22121022122222 its reverse (22222122012122), we get a palindrome (44343144134344).

The spelling of 22121022122222 in words is "twenty-two trillion, one hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".