121222121022 has 64 divisors (see below), whose sum is σ = 271690272000. Its totient is φ = 40062410784.

The previous prime is 121222121011. The next prime is 121222121047. The reversal of 121222121022 is 220121222121.

It is a happy number.

121222121022 is a `hidden beast` number, since 1 + 212 + 221 + 210 + 22 = 666.

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 = 121222120986 and 121222121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3671604 + ... + 3704472.

It is an arithmetic number, because the mean of its divisors is an integer number (4245160500).

Almost surely, 2^121222121022 is an apocalyptic number.

121222121022 is an abundant number, since it is smaller than the sum of its proper divisors (150468150978).

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

121222121022 is a wasteful number, since it uses less digits than its factorization.

121222121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33462 (or 33456 counting only the distinct ones).

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

Adding to 121222121022 its reverse (220121222121), we get a palindrome (341343343143).

The spelling of 121222121022 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty-two".