1212100130 has 32 divisors (see below), whose sum is σ = 2224627200. Its totient is φ = 475362432.

The previous prime is 1212100129. The next prime is 1212100133. The reversal of 1212100130 is 310012121.

It is not an unprimeable number, because it can be changed into a prime (1212100133) 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, 238799 + ... + 243821.

It is an arithmetic number, because the mean of its divisors is an integer number (69519600).

Almost surely, 2^1212100130 is an apocalyptic number.

1212100130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212100130 is a deficient number, since it is larger than the sum of its proper divisors (1012527070).

1212100130 is a wasteful number, since it uses less digits than its factorization.

1212100130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498.

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

The square root of 1212100130 is about 34815.2284209080. The cubic root of 1212100130 is about 1066.2183826998.

Adding to 1212100130 its reverse (310012121), we get a palindrome (1522112251).

The spelling of 1212100130 in words is "one billion, two hundred twelve million, one hundred thousand, one hundred thirty".