121536120642126 has 16 divisors (see below), whose sum is σ = 248725084105344. Its totient is φ = 39569899743864.

The previous prime is 121536120642107. The next prime is 121536120642133. The reversal of 121536120642126 is 621246021635121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235535117266 + ... + 235535117781.

It is an arithmetic number, because the mean of its divisors is an integer number (15545317756584).

Almost surely, 2^{121536120642126} is an apocalyptic number.

121536120642126 is an abundant number, since it is smaller than the sum of its proper divisors (127188963463218).

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

121536120642126 is a wasteful number, since it uses less digits than its factorization.

121536120642126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471070235095.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 121536120642126 in words is "one hundred twenty-one trillion, five hundred thirty-six billion, one hundred twenty million, six hundred forty-two thousand, one hundred twenty-six".