201222101022212 has 12 divisors (see below), whose sum is σ = 352139135575500. Its totient is φ = 100610919429216.

The previous prime is 201222101022203. The next prime is 201222101022251. The reversal of 201222101022212 is 212220101222102.

It can be written as a sum of positive squares in 2 ways, for example, as 64878739810756 + 136343361211456 = 8054734^2 + 11676616^2 .

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, 29275103 + ... + 35489094.

It is an arithmetic number, because the mean of its divisors is an integer number (29344927964625).

Almost surely, 2^{201222101022212} is an apocalyptic number.

It is an amenable number.

201222101022212 is a deficient number, since it is larger than the sum of its proper divisors (150917034553288).

201222101022212 is a wasteful number, since it uses less digits than its factorization.

201222101022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65540950 (or 65540948 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 201222101022212 its reverse (212220101222102), we get a palindrome (413442202244314).

The spelling of 201222101022212 in words is "two hundred one trillion, two hundred twenty-two billion, one hundred one million, twenty-two thousand, two hundred twelve".