213412221400 has 48 divisors (see below), whose sum is σ = 567066763440. Its totient is φ = 73169904000.

The previous prime is 213412221397. The next prime is 213412221403. The reversal of 213412221400 is 4122214312.

It is an interprime number because it is at equal distance from previous prime (213412221397) and next prime (213412221403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213412221403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76217251 + ... + 76220050.

It is an arithmetic number, because the mean of its divisors is an integer number (11813890905).

Almost surely, 2^213412221400 is an apocalyptic number.

213412221400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213412221400 is an abundant number, since it is smaller than the sum of its proper divisors (353654542040).

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

213412221400 is a wasteful number, since it uses less digits than its factorization.

213412221400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152437324 (or 152437315 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 213412221400 its reverse (4122214312), we get a palindrome (217534435712).

The spelling of 213412221400 in words is "two hundred thirteen billion, four hundred twelve million, two hundred twenty-one thousand, four hundred".