213220023144 has 16 divisors (see below), whose sum is σ = 533050057920. Its totient is φ = 71073341040.

The previous prime is 213220023131. The next prime is 213220023157. The reversal of 213220023144 is 441320022312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (213220023131) and next prime (213220023157).

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 8884167631 = 213220023144 / (2 + 1 + 3 + 2 + 2 + 0 + 0 + 2 + 3 + 1 + 4 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4442083792 + ... + 4442083839.

It is an arithmetic number, because the mean of its divisors is an integer number (33315628620).

Almost surely, 2^213220023144 is an apocalyptic number.

213220023144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213220023144 is an abundant number, since it is smaller than the sum of its proper divisors (319830034776).

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

213220023144 is a wasteful number, since it uses less digits than its factorization.

213220023144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8884167640 (or 8884167636 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 213220023144 its reverse (441320022312), we get a palindrome (654540045456).

The spelling of 213220023144 in words is "two hundred thirteen billion, two hundred twenty million, twenty-three thousand, one hundred forty-four".