121998622 has 8 divisors (see below), whose sum is σ = 185504976. Its totient is φ = 60163632.

The previous prime is 121998589. The next prime is 121998631. The reversal of 121998622 is 226899121.

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, 417658 + ... + 417949.

It is an arithmetic number, because the mean of its divisors is an integer number (23188122).

Almost surely, 2^121998622 is an apocalyptic number.

121998622 is a deficient number, since it is larger than the sum of its proper divisors (63506354).

121998622 is an equidigital number, since it uses as much as digits as its factorization.

121998622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835682.

The product of its digits is 31104, while the sum is 40.

The square root of 121998622 is about 11045.2986378821. The cubic root of 121998622 is about 495.9656990458.

The spelling of 121998622 in words is "one hundred twenty-one million, nine hundred ninety-eight thousand, six hundred twenty-two".