213144244412 has 48 divisors (see below), whose sum is σ = 407863475712. Its totient is φ = 96657415680.

The previous prime is 213144244409. The next prime is 213144244429. The reversal of 213144244412 is 214442441312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46873523 + ... + 46878069.

It is an arithmetic number, because the mean of its divisors is an integer number (8497155744).

Almost surely, 2^213144244412 is an apocalyptic number.

213144244412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213144244412 is a deficient number, since it is larger than the sum of its proper divisors (194719231300).

213144244412 is a wasteful number, since it uses less digits than its factorization.

213144244412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818 (or 6816 counting only the distinct ones).

The product of its digits is 24576, while the sum is 32.

Adding to 213144244412 its reverse (214442441312), we get a palindrome (427586685724).

The spelling of 213144244412 in words is "two hundred thirteen billion, one hundred forty-four million, two hundred forty-four thousand, four hundred twelve".