210021122221193 has 4 divisors (see below), whose sum is σ = 210023759862480. Its totient is φ = 210018484579908.

The previous prime is 210021122221123. The next prime is 210021122221217. The reversal of 210021122221193 is 391122221120012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210021122221193 - 2²⁴ = 210021105443977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210021122221123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1318701203 + ... + 1318860456.

It is an arithmetic number, because the mean of its divisors is an integer number (52505939965620).

Almost surely, 2^{210021122221193} is an apocalyptic number.

It is an amenable number.

210021122221193 is a deficient number, since it is larger than the sum of its proper divisors (2637641287).

210021122221193 is an equidigital number, since it uses as much as digits as its factorization.

210021122221193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637641286.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 210021122221193 in words is "two hundred ten trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred ninety-three".