121220111002122 has 48 divisors (see below), whose sum is σ = 289302012537408. Its totient is φ = 36376732333440.

The previous prime is 121220111002103. The next prime is 121220111002181. The reversal of 121220111002122 is 221200111022121.

121220111002122 is a `hidden beast` number, since 121 + 220 + 1 + 110 + 0 + 212 + 2 = 666.

It is a super-2 number, since 2×121220111002122² (a number of 29 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 121220111002095 and 121220111002104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2971934863 + ... + 2971975650.

It is an arithmetic number, because the mean of its divisors is an integer number (6027125261196).

Almost surely, 2^{121220111002122} is an apocalyptic number.

121220111002122 is an abundant number, since it is smaller than the sum of its proper divisors (168081901535286).

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

121220111002122 is a wasteful number, since it uses less digits than its factorization.

121220111002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5943910635 (or 5943910632 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121220111002122 its reverse (221200111022121), we get a palindrome (342420222024243).

The spelling of 121220111002122 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred eleven million, two thousand, one hundred twenty-two".