212200100100121 has 16 divisors (see below), whose sum is σ = 255290158080000. Its totient is φ = 172304869774608.

The previous prime is 212200100100061. The next prime is 212200100100161. The reversal of 212200100100121 is 121001001002212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212200100100121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212200100100161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34128121 + ... + 39863878.

It is an arithmetic number, because the mean of its divisors is an integer number (15955634880000).

Almost surely, 2^{212200100100121} is an apocalyptic number.

It is an amenable number.

212200100100121 is a deficient number, since it is larger than the sum of its proper divisors (43090057979879).

212200100100121 is a wasteful number, since it uses less digits than its factorization.

212200100100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74013588.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212200100100121 its reverse (121001001002212), we get a palindrome (333201101102333).

The spelling of 212200100100121 in words is "two hundred twelve trillion, two hundred billion, one hundred million, one hundred thousand, one hundred twenty-one".