213121333201100 has 36 divisors (see below), whose sum is σ = 462522805114608. Its totient is φ = 85239406632000.

The previous prime is 213121333201001. The next prime is 213121333201103. The reversal of 213121333201100 is 1102333121312.

It is not an unprimeable number, because it can be changed into a prime (213121333201103) 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, 113144336 + ... + 115012535.

It is an arithmetic number, because the mean of its divisors is an integer number (12847855697628).

Almost surely, 2^{213121333201100} is an apocalyptic number.

213121333201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213121333201100 is an abundant number, since it is smaller than the sum of its proper divisors (249401471913508).

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

213121333201100 is a wasteful number, since it uses less digits than its factorization.

213121333201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228166226 (or 228166219 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 213121333201100 its reverse (1102333121312), we get a palindrome (214223666322412).

The spelling of 213121333201100 in words is "two hundred thirteen trillion, one hundred twenty-one billion, three hundred thirty-three million, two hundred one thousand, one hundred".