121221101010212 has 48 divisors (see below), whose sum is σ = 244147533815808. Its totient is φ = 51586753456800.

The previous prime is 121221101010197. The next prime is 121221101010241. The reversal of 121221101010212 is 212010101122121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4487513 + ... + 16204319.

It is an arithmetic number, because the mean of its divisors is an integer number (5086406954496).

Almost surely, 2^{121221101010212} is an apocalyptic number.

It is an amenable number.

121221101010212 is an abundant number, since it is smaller than the sum of its proper divisors (122926432805596).

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

121221101010212 is a wasteful number, since it uses less digits than its factorization.

121221101010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11719416 (or 11719414 counting only the distinct ones).

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

Adding to 121221101010212 its reverse (212010101122121), we get a palindrome (333231202132333).

The spelling of 121221101010212 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, one hundred one million, ten thousand, two hundred twelve".