121022500 has 30 divisors (see below), whose sum is σ = 264657470. Its totient is φ = 48408000.

The previous prime is 121022477. The next prime is 121022513. The reversal of 121022500 is 5220121.

It can be written as a sum of positive squares in 5 ways, for example, as 10394176 + 110628324 = 3224^2 + 10518^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21705 + ... + 26704.

Almost surely, 2^121022500 is an apocalyptic number.

121022500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022500 is an abundant number, since it is smaller than the sum of its proper divisors (143634970).

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

121022500 is an equidigital number, since it uses as much as digits as its factorization.

121022500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48433 (or 48416 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 121022500 is about 11001.0226797330. The cubic root of 121022500 is about 494.6393999916.

Adding to 121022500 its reverse (5220121), we get a palindrome (126242621).

The spelling of 121022500 in words is "one hundred twenty-one million, twenty-two thousand, five hundred".