121113221004 has 24 divisors (see below), whose sum is σ = 313997239920. Its totient is φ = 40371073632.

The previous prime is 121113220999. The next prime is 121113221011. The reversal of 121113221004 is 400122311121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560709249 + ... + 560709464.

It is an arithmetic number, because the mean of its divisors is an integer number (13083218330).

Almost surely, 2^121113221004 is an apocalyptic number.

It is an amenable number.

121113221004 is an abundant number, since it is smaller than the sum of its proper divisors (192884018916).

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

121113221004 is a wasteful number, since it uses less digits than its factorization.

121113221004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121418726 (or 1121418718 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121113221004 its reverse (400122311121), we get a palindrome (521235532125).

The spelling of 121113221004 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred twenty-one thousand, four".