213101221100 has 36 divisors (see below), whose sum is σ = 462510543264. Its totient is φ = 85225577280.

The previous prime is 213101221049. The next prime is 213101221163. The reversal of 213101221100 is 1122101312.

It is a super-2 number, since 2×213101221100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 397214 + ... + 764186.

Almost surely, 2^213101221100 is an apocalyptic number.

213101221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213101221100 is an abundant number, since it is smaller than the sum of its proper divisors (249409322164).

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

213101221100 is a wasteful number, since it uses less digits than its factorization.

213101221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372794 (or 372787 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 213101221100 its reverse (1122101312), we get a palindrome (214223322412).

The spelling of 213101221100 in words is "two hundred thirteen billion, one hundred one million, two hundred twenty-one thousand, one hundred".