121016631646 has 8 divisors (see below), whose sum is σ = 182574225144. Its totient is φ = 60158556600.

The previous prime is 121016631551. The next prime is 121016631667. The reversal of 121016631646 is 646136610121.

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

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, 174879180 + ... + 174879871.

It is an arithmetic number, because the mean of its divisors is an integer number (22821778143).

Almost surely, 2^121016631646 is an apocalyptic number.

121016631646 is a deficient number, since it is larger than the sum of its proper divisors (61557593498).

121016631646 is a wasteful number, since it uses less digits than its factorization.

121016631646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349759226.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 121016631646 in words is "one hundred twenty-one billion, sixteen million, six hundred thirty-one thousand, six hundred forty-six".