213142022440 has 16 divisors (see below), whose sum is σ = 479569550580. Its totient is φ = 85256808960.

The previous prime is 213142022413. The next prime is 213142022447. The reversal of 213142022440 is 44220241312.

It can be written as a sum of positive squares in 2 ways, for example, as 179435265604 + 33706756836 = 423598^2 + 183594^2 .

It is not an unprimeable number, because it can be changed into a prime (213142022447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2664275241 + ... + 2664275320.

Almost surely, 2^213142022440 is an apocalyptic number.

213142022440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213142022440 is an abundant number, since it is smaller than the sum of its proper divisors (266427528140).

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

213142022440 is a wasteful number, since it uses less digits than its factorization.

213142022440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5328550572 (or 5328550568 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 213142022440 its reverse (44220241312), we get a palindrome (257362263752).

The spelling of 213142022440 in words is "two hundred thirteen billion, one hundred forty-two million, twenty-two thousand, four hundred forty".