121771425774 has 8 divisors (see below), whose sum is σ = 243542851560. Its totient is φ = 40590475256.

The previous prime is 121771425709. The next prime is 121771425793. The reversal of 121771425774 is 477524177121.

It is a sphenic number, since it is the product of 3 distinct primes.

121771425774 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10147618809 + ... + 10147618820.

It is an arithmetic number, because the mean of its divisors is an integer number (30442856445).

Almost surely, 2^121771425774 is an apocalyptic number.

121771425774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121771425774 is a wasteful number, since it uses less digits than its factorization.

121771425774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20295237634.

The product of its digits is 768320, while the sum is 48.

The spelling of 121771425774 in words is "one hundred twenty-one billion, seven hundred seventy-one million, four hundred twenty-five thousand, seven hundred seventy-four".