121020022042 has 32 divisors (see below), whose sum is σ = 196742068992. Its totient is φ = 55612737024.

The previous prime is 121020022009. The next prime is 121020022043. The reversal of 121020022042 is 240220020121.

It is not an unprimeable number, because it can be changed into a prime (121020022043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622438 + ... + 793390.

It is an arithmetic number, because the mean of its divisors is an integer number (6148189656).

Almost surely, 2^121020022042 is an apocalyptic number.

121020022042 is a deficient number, since it is larger than the sum of its proper divisors (75722046950).

121020022042 is a wasteful number, since it uses less digits than its factorization.

121020022042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171462.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 121020022042 its reverse (240220020121), we get a palindrome (361240042163).

The spelling of 121020022042 in words is "one hundred twenty-one billion, twenty million, twenty-two thousand, forty-two".