121102120011100 has 144 divisors (see below), whose sum is σ = 296525369161728. Its totient is φ = 42681297218560.

The previous prime is 121102120011071. The next prime is 121102120011149. The reversal of 121102120011100 is 1110021201121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31111672 + ... + 34787071.

It is an arithmetic number, because the mean of its divisors is an integer number (2059203952512).

Almost surely, 2^{121102120011100} is an apocalyptic number.

121102120011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121102120011100 is an abundant number, since it is smaller than the sum of its proper divisors (175423249150628).

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

121102120011100 is a wasteful number, since it uses less digits than its factorization.

121102120011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65898844 (or 65898837 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121102120011100 its reverse (1110021201121), we get a palindrome (122212141212221).

The spelling of 121102120011100 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred twenty million, eleven thousand, one hundred".