22012220201212 has 12 divisors (see below), whose sum is σ = 38521473646320. Its totient is φ = 11006084873696.

The previous prime is 22012220201197. The next prime is 22012220201227. The reversal of 22012220201212 is 21210202221022.

It is an interprime number because it is at equal distance from previous prime (22012220201197) and next prime (22012220201227).

It is a self number, because there is not a number n which added to its sum of digits gives 22012220201212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4270393 + ... + 7890544.

It is an arithmetic number, because the mean of its divisors is an integer number (3210122803860).

Almost surely, 2^{22012220201212} is an apocalyptic number.

It is an amenable number.

22012220201212 is a deficient number, since it is larger than the sum of its proper divisors (16509253445108).

22012220201212 is a wasteful number, since it uses less digits than its factorization.

22012220201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12613460 (or 12613458 counting only the distinct ones).

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

Adding to 22012220201212 its reverse (21210202221022), we get a palindrome (43222422422234).

The spelling of 22012220201212 in words is "twenty-two trillion, twelve billion, two hundred twenty million, two hundred one thousand, two hundred twelve".