121020222222 has 24 divisors (see below), whose sum is σ = 264806628840. Its totient is φ = 39940666800.

The previous prime is 121020222187. The next prime is 121020222287. The reversal of 121020222222 is 222222020121.

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

121020222222 is a modest number, since divided by 222222 gives 121020 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 121020222195 and 121020222204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33282072 + ... + 33285707.

It is an arithmetic number, because the mean of its divisors is an integer number (11033609535).

Almost surely, 2^121020222222 is an apocalyptic number.

121020222222 is an abundant number, since it is smaller than the sum of its proper divisors (143786406618).

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

121020222222 is a wasteful number, since it uses less digits than its factorization.

121020222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66567888 (or 66567885 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 121020222222 its reverse (222222020121), we get a palindrome (343242242343).

The spelling of 121020222222 in words is "one hundred twenty-one billion, twenty million, two hundred twenty-two thousand, two hundred twenty-two".