1213024100 has 36 divisors (see below), whose sum is σ = 2647515444. Its totient is φ = 482398080.

The previous prime is 1213024097. The next prime is 1213024121. The reversal of 1213024100 is 14203121.

It can be written as a sum of positive squares in 6 ways, for example, as 2540836 + 1210483264 = 1594^2 + 34792^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17759 + ... + 52358.

Almost surely, 2^1213024100 is an apocalyptic number.

1213024100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213024100 is an abundant number, since it is smaller than the sum of its proper divisors (1434491344).

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

1213024100 is a wasteful number, since it uses less digits than its factorization.

1213024100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70304 (or 70297 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1213024100 is about 34828.4955173203. The cubic root of 1213024100 is about 1066.4892358955.

Adding to 1213024100 its reverse (14203121), we get a palindrome (1227227221).

The spelling of 1213024100 in words is "one billion, two hundred thirteen million, twenty-four thousand, one hundred".