121940733394 has 16 divisors (see below), whose sum is σ = 185075458560. Its totient is φ = 60251223600.

The previous prime is 121940733367. The next prime is 121940733401. The reversal of 121940733394 is 493337049121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471474 + ... + 682765.

It is an arithmetic number, because the mean of its divisors is an integer number (11567216160).

Almost surely, 2^121940733394 is an apocalyptic number.

121940733394 is a deficient number, since it is larger than the sum of its proper divisors (63134725166).

121940733394 is a wasteful number, since it uses less digits than its factorization.

121940733394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154865.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 121940733394 in words is "one hundred twenty-one billion, nine hundred forty million, seven hundred thirty-three thousand, three hundred ninety-four".