121021130 has 16 divisors (see below), whose sum is σ = 230652360. Its totient is φ = 45560832.

The previous prime is 121021111. The next prime is 121021151. The reversal of 121021130 is 31120121.

It can be written as a sum of positive squares in 4 ways, for example, as 72063121 + 48958009 = 8489^2 + 6997^2 .

It is a super-2 number, since 2×121021130² = 29292227812953800, which contains 22 as substring.

It is a Curzon 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, 355775 + ... + 356114.

Almost surely, 2^121021130 is an apocalyptic number.

121021130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021130 is a deficient number, since it is larger than the sum of its proper divisors (109631230).

121021130 is a wasteful number, since it uses less digits than its factorization.

121021130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711913.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 121021130 is about 11000.9604126185. The cubic root of 121021130 is about 494.6375335108.

Adding to 121021130 its reverse (31120121), we get a palindrome (152141251).

The spelling of 121021130 in words is "one hundred twenty-one million, twenty-one thousand, one hundred thirty".