1251210130 has 32 divisors (see below), whose sum is σ = 2366869824. Its totient is φ = 475626816.

The previous prime is 1251210091. The next prime is 1251210131. The reversal of 1251210130 is 310121521.

It is not an unprimeable number, because it can be changed into a prime (1251210131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23412 + ... + 55231.

It is an arithmetic number, because the mean of its divisors is an integer number (73964682).

Almost surely, 2^1251210130 is an apocalyptic number.

1251210130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251210130 is a deficient number, since it is larger than the sum of its proper divisors (1115659694).

1251210130 is a wasteful number, since it uses less digits than its factorization.

1251210130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78730.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1251210130 is about 35372.4487419234. The cubic root of 1251210130 is about 1077.5648523725.

Adding to 1251210130 its reverse (310121521), we get a palindrome (1561331651).

The spelling of 1251210130 in words is "one billion, two hundred fifty-one million, two hundred ten thousand, one hundred thirty".