121777422 has 32 divisors (see below), whose sum is σ = 276097920. Its totient is φ = 35497440.

The previous prime is 121777399. The next prime is 121777451. The reversal of 121777422 is 224777121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39604 + ... + 42567.

It is an arithmetic number, because the mean of its divisors is an integer number (8628060).

Almost surely, 2^121777422 is an apocalyptic number.

121777422 is an abundant number, since it is smaller than the sum of its proper divisors (154320498).

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

121777422 is a wasteful number, since it uses less digits than its factorization.

121777422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82208.

The product of its digits is 10976, while the sum is 33.

The square root of 121777422 is about 11035.2807848283. The cubic root of 121777422 is about 495.6657667388.

The spelling of 121777422 in words is "one hundred twenty-one million, seven hundred seventy-seven thousand, four hundred twenty-two".