121001111100212 has 24 divisors (see below), whose sum is σ = 242010218419200. Its totient is φ = 51855905567520.

The previous prime is 121001111100143. The next prime is 121001111100223. The reversal of 121001111100212 is 212001111100121.

It is a super-2 number, since 2×121001111100212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70532087 + ... + 72227262.

It is an arithmetic number, because the mean of its divisors is an integer number (10083759100800).

Almost surely, 2^{121001111100212} is an apocalyptic number.

It is an amenable number.

121001111100212 is an abundant number, since it is smaller than the sum of its proper divisors (121009107318988).

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

121001111100212 is a wasteful number, since it uses less digits than its factorization.

121001111100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142789631 (or 142789629 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121001111100212 its reverse (212001111100121), we get a palindrome (333002222200333).

Subtracting 121001111100212 from its reverse (212001111100121), we obtain a palindrome (90999999999909).

The spelling of 121001111100212 in words is "one hundred twenty-one trillion, one billion, one hundred eleven million, one hundred thousand, two hundred twelve".