121996894 has 24 divisors (see below), whose sum is σ = 189681624. Its totient is φ = 58843200.

The previous prime is 121996877. The next prime is 121996907. The reversal of 121996894 is 498699121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 440284 + ... + 440560.

It is an arithmetic number, because the mean of its divisors is an integer number (7903401).

Almost surely, 2^121996894 is an apocalyptic number.

121996894 is a deficient number, since it is larger than the sum of its proper divisors (67684730).

121996894 is a wasteful number, since it uses less digits than its factorization.

121996894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 451 counting only the distinct ones).

The product of its digits is 279936, while the sum is 49.

The square root of 121996894 is about 11045.2204142787. The cubic root of 121996894 is about 495.9633573997.

The spelling of 121996894 in words is "one hundred twenty-one million, nine hundred ninety-six thousand, eight hundred ninety-four".