1213811202 has 16 divisors (see below), whose sum is σ = 2433393792. Its totient is φ = 403641840.

The previous prime is 1213811197. The next prime is 1213811213. The reversal of 1213811202 is 2021183121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237738 + ... + 242789.

It is an arithmetic number, because the mean of its divisors is an integer number (152087112).

Almost surely, 2^1213811202 is an apocalyptic number.

1213811202 is an abundant number, since it is smaller than the sum of its proper divisors (1219582590).

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

1213811202 is a wasteful number, since it uses less digits than its factorization.

1213811202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480953.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1213811202 is about 34839.7933690773. The cubic root of 1213811202 is about 1066.7198590444.

Adding to 1213811202 its reverse (2021183121), we get a palindrome (3234994323).

The spelling of 1213811202 in words is "one billion, two hundred thirteen million, eight hundred eleven thousand, two hundred two".