252112223140 has 24 divisors (see below), whose sum is σ = 530910434880. Its totient is φ = 100563981408.

The previous prime is 252112223137. The next prime is 252112223159. The reversal of 252112223140 is 41322211252.

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, 17549382 + ... + 17563741.

It is an arithmetic number, because the mean of its divisors is an integer number (22121268120).

Almost surely, 2^252112223140 is an apocalyptic number.

252112223140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252112223140 is an abundant number, since it is smaller than the sum of its proper divisors (278798211740).

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

252112223140 is a wasteful number, since it uses less digits than its factorization.

252112223140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35113491 (or 35113489 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 252112223140 its reverse (41322211252), we get a palindrome (293434434392).

The spelling of 252112223140 in words is "two hundred fifty-two billion, one hundred twelve million, two hundred twenty-three thousand, one hundred forty".