22201212210 has 32 divisors (see below), whose sum is σ = 53287146432. Its totient is φ = 5919852480.

The previous prime is 22201212193. The next prime is 22201212227. The reversal of 22201212210 is 1221210222.

It is an interprime number because it is at equal distance from previous prime (22201212193) and next prime (22201212227).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22201212210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526012 + ... + 566648.

It is an arithmetic number, because the mean of its divisors is an integer number (1665223326).

Almost surely, 2^22201212210 is an apocalyptic number.

22201212210 is an abundant number, since it is smaller than the sum of its proper divisors (31085934222).

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

22201212210 is a wasteful number, since it uses less digits than its factorization.

22201212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58858.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22201212210 its reverse (1221210222), we get a palindrome (23422422432).

The spelling of 22201212210 in words is "twenty-two billion, two hundred one million, two hundred twelve thousand, two hundred ten".