130121000 has 32 divisors (see below), whose sum is σ = 304485480. Its totient is φ = 52048000.

The previous prime is 130120997. The next prime is 130121011. The reversal of 130121000 is 121031.

It can be written as a sum of positive squares in 4 ways, for example, as 65254084 + 64866916 = 8078^2 + 8054^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

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, 64061 + ... + 66060.

Almost surely, 2^130121000 is an apocalyptic number.

130121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130121000 is an abundant number, since it is smaller than the sum of its proper divisors (174364480).

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

130121000 is a wasteful number, since it uses less digits than its factorization.

130121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130142 (or 130128 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 130121000 is about 11407.0592178703. The cubic root of 130121000 is about 506.7368227722.

Adding to 130121000 its reverse (121031), we get a palindrome (130242031).

The spelling of 130121000 in words is "one hundred thirty million, one hundred twenty-one thousand".