1213015876900 has 81 divisors (see below), whose sum is σ = 2649008438937. Its totient is φ = 482135731200.

The previous prime is 1213015876883. The next prime is 1213015876937. The reversal of 1213015876900 is 96785103121.

The square root of 1213015876900 is 1101370.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 76676932836 + 1136338944064 = 276906^2 + 1065992^2 .

It is a super-2 number, since 2×1213015876900² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2654301472 + ... + 2654301928.

Almost surely, 2^{1213015876900} is an apocalyptic number.

1213015876900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213015876900 is the 1101370-th square number.

It is an amenable number.

1213015876900 is an abundant number, since it is smaller than the sum of its proper divisors (1435992562037).

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

1213015876900 is an frugal number, since it uses more digits than its factorization.

1213015876900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 1213015876900 in words is "one trillion, two hundred thirteen billion, fifteen million, eight hundred seventy-six thousand, nine hundred".