212121200011000 has 128 divisors (see below), whose sum is σ = 567279825840000. Its totient is φ = 72726354355200.

The previous prime is 212121200010947. The next prime is 212121200011031. The reversal of 212121200011000 is 110002121212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 792105126 + ... + 792372874.

It is an arithmetic number, because the mean of its divisors is an integer number (4431873639375).

Almost surely, 2^{212121200011000} is an apocalyptic number.

212121200011000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212121200011000 is an abundant number, since it is smaller than the sum of its proper divisors (355158625829000).

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

212121200011000 is a wasteful number, since it uses less digits than its factorization.

212121200011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380954 (or 380940 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212121200011000 its reverse (110002121212), we get a palindrome (212231202132212).

The spelling of 212121200011000 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred million, eleven thousand".