121221202022 has 16 divisors (see below), whose sum is σ = 183613571232. Its totient is φ = 60016783680.

The previous prime is 121221201991. The next prime is 121221202043. The reversal of 121221202022 is 220202122121.

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 7 ways as a sum of consecutive naturals, for example, 3306818 + ... + 3343274.

It is an arithmetic number, because the mean of its divisors is an integer number (11475848202).

Almost surely, 2^121221202022 is an apocalyptic number.

121221202022 is a deficient number, since it is larger than the sum of its proper divisors (62392369210).

121221202022 is a wasteful number, since it uses less digits than its factorization.

121221202022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52703.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121221202022 its reverse (220202122121), we get a palindrome (341423324143).

The spelling of 121221202022 in words is "one hundred twenty-one billion, two hundred twenty-one million, two hundred two thousand, twenty-two".