121202221122 has 48 divisors (see below), whose sum is σ = 269744297472. Its totient is φ = 39302699040.

The previous prime is 121202221109. The next prime is 121202221169. The reversal of 121202221122 is 221122202121.

It is a happy number.

121202221122 is a `hidden beast` number, since 121 + 202 + 221 + 122 = 666.

121202221122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 = 121202221095 and 121202221104.

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, 6511513 + ... + 6530099.

It is an arithmetic number, because the mean of its divisors is an integer number (5619672864).

Almost surely, 2^121202221122 is an apocalyptic number.

121202221122 is an abundant number, since it is smaller than the sum of its proper divisors (148542076350).

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

121202221122 is a wasteful number, since it uses less digits than its factorization.

121202221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28423 (or 28420 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121202221122 its reverse (221122202121), we get a palindrome (342324423243).

The spelling of 121202221122 in words is "one hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, one hundred twenty-two".