212100100121010 has 16 divisors (see below), whose sum is σ = 509040240290496. Its totient is φ = 56560026698928.

The previous prime is 212100100120981. The next prime is 212100100121017. The reversal of 212100100121010 is 10121001001212.

It is not an unprimeable number, because it can be changed into a prime (212100100121017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3535001668654 + ... + 3535001668713.

It is an arithmetic number, because the mean of its divisors is an integer number (31815015018156).

Almost surely, 2^{212100100121010} is an apocalyptic number.

212100100121010 is an abundant number, since it is smaller than the sum of its proper divisors (296940140169486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212100100121010 is a wasteful number, since it uses less digits than its factorization.

212100100121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070003337377.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 212100100121010 its reverse (10121001001212), we get a palindrome (222221101122222).

The spelling of 212100100121010 in words is "two hundred twelve trillion, one hundred billion, one hundred million, one hundred twenty-one thousand, ten".