121406200442 has 32 divisors (see below), whose sum is σ = 190878031872. Its totient is φ = 57804135664.

The previous prime is 121406200411. The next prime is 121406200471. The reversal of 121406200442 is 244002604121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26698013 + ... + 26702559.

It is an arithmetic number, because the mean of its divisors is an integer number (5964938496).

Almost surely, 2^121406200442 is an apocalyptic number.

121406200442 is a deficient number, since it is larger than the sum of its proper divisors (69471831430).

121406200442 is a wasteful number, since it uses less digits than its factorization.

121406200442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7042.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 121406200442 its reverse (244002604121), we get a palindrome (365408804563).

The spelling of 121406200442 in words is "one hundred twenty-one billion, four hundred six million, two hundred thousand, four hundred forty-two".