1213011852 has 24 divisors (see below), whose sum is σ = 3048081456. Its totient is φ = 373234368.

The previous prime is 1213011827. The next prime is 1213011853. The reversal of 1213011852 is 2581103121.

It is not an unprimeable number, because it can be changed into a prime (1213011853) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3887703 + ... + 3888014.

It is an arithmetic number, because the mean of its divisors is an integer number (127003394).

Almost surely, 2^1213011852 is an apocalyptic number.

1213011852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213011852 is an abundant number, since it is smaller than the sum of its proper divisors (1835069604).

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

1213011852 is a wasteful number, since it uses less digits than its factorization.

1213011852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775737 (or 7775735 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 1213011852 is about 34828.3196838435. The cubic root of 1213011852 is about 1066.4856464082.

Adding to 1213011852 its reverse (2581103121), we get a palindrome (3794114973).

The spelling of 1213011852 in words is "one billion, two hundred thirteen million, eleven thousand, eight hundred fifty-two".