212122120210101 has 12 divisors (see below), whose sum is σ = 306398749228000. Its totient is φ = 141414686277480.

The previous prime is 212122120210079. The next prime is 212122120210109. The reversal of 212122120210101 is 101012021221212.

212122120210101 is a `hidden beast` number, since 21 + 212 + 2 + 120 + 210 + 101 = 666.

It is not a de Polignac number, because 212122120210101 - 2⁵ = 212122120210069 is a prime.

It is a super-2 number, since 2×212122120210101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122120210109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29870400 + ... + 36283398.

Almost surely, 2^{212122120210101} is an apocalyptic number.

It is an amenable number.

212122120210101 is a deficient number, since it is larger than the sum of its proper divisors (94276629017899).

212122120210101 is a wasteful number, since it uses less digits than its factorization.

212122120210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10088216 (or 10088213 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212122120210101 its reverse (101012021221212), we get a palindrome (313134141431313).

The spelling of 212122120210101 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred twenty million, two hundred ten thousand, one hundred one".