22121220010222 has 4 divisors (see below), whose sum is σ = 33181830015336. Its totient is φ = 11060610005110.

The previous prime is 22121220010133. The next prime is 22121220010259. The reversal of 22121220010222 is 22201002212122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22121220010222.

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, 5530305002554 + ... + 5530305002557.

It is an arithmetic number, because the mean of its divisors is an integer number (8295457503834).

Almost surely, 2^{22121220010222} is an apocalyptic number.

22121220010222 is a deficient number, since it is larger than the sum of its proper divisors (11060610005114).

22121220010222 is a wasteful number, since it uses less digits than its factorization.

22121220010222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060610005113.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22121220010222 its reverse (22201002212122), we get a palindrome (44322222222344).

The spelling of 22121220010222 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, ten thousand, two hundred twenty-two".