1300121000 has 64 divisors (see below), whose sum is σ = 3174612480. Its totient is φ = 497428800.

The previous prime is 1300120979. The next prime is 1300121033. The reversal of 1300121000 is 1210031.

It is a super-2 number, since 2×1300121000² = 3380629229282000000, which contains 22 as substring.

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

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, 5264 + ... + 51263.

It is an arithmetic number, because the mean of its divisors is an integer number (49603320).

Almost surely, 2^1300121000 is an apocalyptic number.

1300121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300121000 is an abundant number, since it is smaller than the sum of its proper divisors (1874491480).

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

1300121000 is a wasteful number, since it uses less digits than its factorization.

1300121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56571 (or 56557 counting only the distinct ones).

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

The square root of 1300121000 is about 36057.1906836903. The cubic root of 1300121000 is about 1091.4267431744.

Adding to 1300121000 its reverse (1210031), we get a palindrome (1301331031).

The spelling of 1300121000 in words is "one billion, three hundred million, one hundred twenty-one thousand".