121221210101012 has 48 divisors (see below), whose sum is σ = 242760476058240. Its totient is φ = 51883802467200.

The previous prime is 121221210100993. The next prime is 121221210101059. The reversal of 121221210101012 is 210101012122121.

It is a congruent number.

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, 297475562 + ... + 297882782.

It is an arithmetic number, because the mean of its divisors is an integer number (5057509917880).

Almost surely, 2^{121221210101012} is an apocalyptic number.

It is an amenable number.

121221210101012 is an abundant number, since it is smaller than the sum of its proper divisors (121539265957228).

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

121221210101012 is a wasteful number, since it uses less digits than its factorization.

121221210101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421152 (or 421150 counting only the distinct ones).

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

Adding to 121221210101012 its reverse (210101012122121), we get a palindrome (331322222223133).

The spelling of 121221210101012 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred ten million, one hundred one thousand, twelve".