121995822 has 16 divisors (see below), whose sum is σ = 262760400. Its totient is φ = 37537152.

The previous prime is 121995803. The next prime is 121995847. The reversal of 121995822 is 228599121.

It is a super-4 number, since 4×121995822⁴ (a number of 33 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 781947 + ... + 782102.

It is an arithmetic number, because the mean of its divisors is an integer number (16422525).

Almost surely, 2^121995822 is an apocalyptic number.

121995822 is an abundant number, since it is smaller than the sum of its proper divisors (140764578).

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

121995822 is a wasteful number, since it uses less digits than its factorization.

121995822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564067.

The product of its digits is 25920, while the sum is 39.

The square root of 121995822 is about 11045.1718863945. The cubic root of 121995822 is about 495.9619047008.

The spelling of 121995822 in words is "one hundred twenty-one million, nine hundred ninety-five thousand, eight hundred twenty-two".