22201212020022 has 48 divisors (see below), whose sum is σ = 55098525680640. Its totient is φ = 6328884674736.

The previous prime is 22201212019999. The next prime is 22201212020023. The reversal of 22201212020022 is 22002021210222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22201212019977 and 22201212020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201212020023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198815622 + ... + 198927257.

It is an arithmetic number, because the mean of its divisors is an integer number (1147885951680).

Almost surely, 2^{22201212020022} is an apocalyptic number.

22201212020022 is an abundant number, since it is smaller than the sum of its proper divisors (32897313660618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22201212020022 is a wasteful number, since it uses less digits than its factorization.

22201212020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397743337 (or 397743334 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22201212020022 its reverse (22002021210222), we get a palindrome (44203233230244).

The spelling of 22201212020022 in words is "twenty-two trillion, two hundred one billion, two hundred twelve million, twenty thousand, twenty-two".