121655314142 has 4 divisors (see below), whose sum is σ = 182482971216. Its totient is φ = 60827657070.

The previous prime is 121655314139. The next prime is 121655314153. The reversal of 121655314142 is 241413556121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30413828534 + ... + 30413828537.

It is an arithmetic number, because the mean of its divisors is an integer number (45620742804).

Almost surely, 2^121655314142 is an apocalyptic number.

121655314142 is a deficient number, since it is larger than the sum of its proper divisors (60827657074).

121655314142 is an equidigital number, since it uses as much as digits as its factorization.

121655314142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60827657073.

The product of its digits is 28800, while the sum is 35.

The spelling of 121655314142 in words is "one hundred twenty-one billion, six hundred fifty-five million, three hundred fourteen thousand, one hundred forty-two".