213100001200 has 60 divisors (see below), whose sum is σ = 514833108840. Its totient is φ = 84763770880.

The previous prime is 213100001171. The next prime is 213100001201. The reversal of 213100001200 is 2100001312.

It is a super-2 number, since 2×213100001200² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (213100001201) 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, 1416529 + ... + 1559728.

It is an arithmetic number, because the mean of its divisors is an integer number (8580551814).

Almost surely, 2^213100001200 is an apocalyptic number.

213100001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213100001200 is an abundant number, since it is smaller than the sum of its proper divisors (301733107640).

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

213100001200 is a wasteful number, since it uses less digits than its factorization.

213100001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976454 (or 2976443 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 213100001200 its reverse (2100001312), we get a palindrome (215200002512).

The spelling of 213100001200 in words is "two hundred thirteen billion, one hundred million, one thousand, two hundred".