213224637100 has 72 divisors (see below), whose sum is σ = 485718912000. Its totient is φ = 81139540800.

The previous prime is 213224637077. The next prime is 213224637103. The reversal of 213224637100 is 1736422312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (213224637103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 400000 + ... + 765799.

It is an arithmetic number, because the mean of its divisors is an integer number (6746096000).

Almost surely, 2^213224637100 is an apocalyptic number.

213224637100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213224637100 is an abundant number, since it is smaller than the sum of its proper divisors (272494274900).

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

213224637100 is a wasteful number, since it uses less digits than its factorization.

213224637100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165903 (or 1165896 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 213224637100 in words is "two hundred thirteen billion, two hundred twenty-four million, six hundred thirty-seven thousand, one hundred".