212222112121201 has 24 divisors (see below), whose sum is σ = 268739302476480. Its totient is φ = 164007070508736.

The previous prime is 212222112121199. The next prime is 212222112121219. The reversal of 212222112121201 is 102121211222212.

It is not a de Polignac number, because 212222112121201 - 2¹ = 212222112121199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212222112121301) 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, 2085916146 + ... + 2086017883.

It is an arithmetic number, because the mean of its divisors is an integer number (11197470936520).

Almost surely, 2^{212222112121201} is an apocalyptic number.

It is an amenable number.

212222112121201 is a deficient number, since it is larger than the sum of its proper divisors (56517190355279).

212222112121201 is a wasteful number, since it uses less digits than its factorization.

212222112121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171934105 (or 4171934092 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 212222112121201 its reverse (102121211222212), we get a palindrome (314343323343413).

The spelling of 212222112121201 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred twelve million, one hundred twenty-one thousand, two hundred one".