213121113200 has 60 divisors (see below), whose sum is σ = 512074308480. Its totient is φ = 85239982080.

The previous prime is 213121113197. The next prime is 213121113203. The reversal of 213121113200 is 2311121312.

It is an interprime number because it is at equal distance from previous prime (213121113197) and next prime (213121113203).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213121113203) 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, 5395121 + ... + 5434479.

It is an arithmetic number, because the mean of its divisors is an integer number (8534571808).

Almost surely, 2^213121113200 is an apocalyptic number.

213121113200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213121113200 is an abundant number, since it is smaller than the sum of its proper divisors (298953195280).

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

213121113200 is a wasteful number, since it uses less digits than its factorization.

213121113200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52914 (or 52903 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213121113200 its reverse (2311121312), we get a palindrome (215432234512).

The spelling of 213121113200 in words is "two hundred thirteen billion, one hundred twenty-one million, one hundred thirteen thousand, two hundred".