210420222091 has 8 divisors (see below), whose sum is σ = 227979229104. Its totient is φ = 193436920320.

The previous prime is 210420222071. The next prime is 210420222101. The reversal of 210420222091 is 190222024012.

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

It is a cyclic number.

It is not a de Polignac number, because 210420222091 - 2⁵ = 210420222059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210420222011) 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, 143925550 + ... + 143927011.

It is an arithmetic number, because the mean of its divisors is an integer number (28497403638).

Almost surely, 2^210420222091 is an apocalyptic number.

210420222091 is a deficient number, since it is larger than the sum of its proper divisors (17559007013).

210420222091 is a wasteful number, since it uses less digits than its factorization.

210420222091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287852621.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 210420222091 in words is "two hundred ten billion, four hundred twenty million, two hundred twenty-two thousand, ninety-one".