212110022012121 has 48 divisors (see below), whose sum is σ = 322812685540800. Its totient is φ = 133837054009344.

The previous prime is 212110022012111. The next prime is 212110022012177. The reversal of 212110022012121 is 121210220011212.

212110022012121 is a `hidden beast` number, since 21 + 211 + 0 + 0 + 220 + 1 + 212 + 1 = 666.

It is not a de Polignac number, because 212110022012121 - 2⁵ = 212110022012089 is a prime.

It is a super-2 number, since 2×212110022012121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212110022012094 and 212110022012103.

It is not an unprimeable number, because it can be changed into a prime (212110022012101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1741586590 + ... + 1741708376.

It is an arithmetic number, because the mean of its divisors is an integer number (6725264282100).

Almost surely, 2^{212110022012121} is an apocalyptic number.

It is an amenable number.

212110022012121 is a deficient number, since it is larger than the sum of its proper divisors (110702663528679).

212110022012121 is a wasteful number, since it uses less digits than its factorization.

212110022012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131398 (or 131395 counting only the distinct ones).

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

Adding to 212110022012121 its reverse (121210220011212), we get a palindrome (333320242023333).

The spelling of 212110022012121 in words is "two hundred twelve trillion, one hundred ten billion, twenty-two million, twelve thousand, one hundred twenty-one".