121113202142 has 32 divisors (see below), whose sum is σ = 185446920960. Its totient is φ = 59305798080.

The previous prime is 121113202141. The next prime is 121113202151. The reversal of 121113202142 is 241202311121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121113202141) 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, 41012138 + ... + 41015090.

It is an arithmetic number, because the mean of its divisors is an integer number (5795216280).

Almost surely, 2^121113202142 is an apocalyptic number.

121113202142 is a deficient number, since it is larger than the sum of its proper divisors (64333718818).

121113202142 is a wasteful number, since it uses less digits than its factorization.

121113202142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121113202142 its reverse (241202311121), we get a palindrome (362315513263).

The spelling of 121113202142 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred two thousand, one hundred forty-two".