212100201000091 has 8 divisors (see below), whose sum is σ = 223285385589200. Its totient is φ = 200917218022560.

The previous prime is 212100201000067. The next prime is 212100201000097. The reversal of 212100201000091 is 190000102001212.

It is a happy number.

212100201000091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212100201000091 - 2⁹ = 212100200999579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100201000097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550205136 + ... + 550590493.

It is an arithmetic number, because the mean of its divisors is an integer number (27910673198650).

Almost surely, 2^{212100201000091} is an apocalyptic number.

212100201000091 is a deficient number, since it is larger than the sum of its proper divisors (11185184589109).

212100201000091 is a wasteful number, since it uses less digits than its factorization.

212100201000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100805789.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 212100201000091 in words is "two hundred twelve trillion, one hundred billion, two hundred one million, ninety-one", and thus it is an aban number.