121222776 has 32 divisors (see below), whose sum is σ = 309507840. Its totient is φ = 39547488.

The previous prime is 121222769. The next prime is 121222789. The reversal of 121222776 is 677222121.

It is a super-2 number, since 2×121222776² = 29389922842292352, which contains 22 as substring.

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, 52606 + ... + 54861.

It is an arithmetic number, because the mean of its divisors is an integer number (9672120).

Almost surely, 2^121222776 is an apocalyptic number.

It is an amenable number.

121222776 is an abundant number, since it is smaller than the sum of its proper divisors (188285064).

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

121222776 is a wasteful number, since it uses less digits than its factorization.

121222776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107523 (or 107519 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 121222776 is about 11010.1215252149. The cubic root of 121222776 is about 494.9121035648.

Adding to 121222776 its reverse (677222121), we get a palindrome (798444897).

The spelling of 121222776 in words is "one hundred twenty-one million, two hundred twenty-two thousand, seven hundred seventy-six".