201121112210212 has 6 divisors (see below), whose sum is σ = 351961946367878. Its totient is φ = 100560556105104.

The previous prime is 201121112210203. The next prime is 201121112210231. The reversal of 201121112210212 is 212012211121102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 174397009754916 + 26724102455296 = 13205946^2 + 5169536^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201121112210212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25140139026273 + ... + 25140139026280.

Almost surely, 2^{201121112210212} is an apocalyptic number.

It is an amenable number.

201121112210212 is a deficient number, since it is larger than the sum of its proper divisors (150840834157666).

201121112210212 is a wasteful number, since it uses less digits than its factorization.

201121112210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50280278052557 (or 50280278052555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201121112210212 its reverse (212012211121102), we get a palindrome (413133323331314).

The spelling of 201121112210212 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twelve million, two hundred ten thousand, two hundred twelve".