212112201010121 has 32 divisors (see below), whose sum is σ = 230457271824000. Its totient is φ = 194486789532672.

The previous prime is 212112201010103. The next prime is 212112201010139. The reversal of 212112201010121 is 121010102211212.

It is an interprime number because it is at equal distance from previous prime (212112201010103) and next prime (212112201010139).

It is a cyclic number.

It is not a de Polignac number, because 212112201010121 - 2¹⁸ = 212112200747977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212112201010121.

It is not an unprimeable number, because it can be changed into a prime (212112201018121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57904475 + ... + 61458543.

It is an arithmetic number, because the mean of its divisors is an integer number (7201789744500).

Almost surely, 2^{212112201010121} is an apocalyptic number.

It is an amenable number.

212112201010121 is a deficient number, since it is larger than the sum of its proper divisors (18345070813879).

212112201010121 is a wasteful number, since it uses less digits than its factorization.

212112201010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554681.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212112201010121 its reverse (121010102211212), we get a palindrome (333122303221333).

The spelling of 212112201010121 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred one million, ten thousand, one hundred twenty-one".