210202120221 has 8 divisors (see below), whose sum is σ = 287105335104. Its totient is φ = 136716826080.

The previous prime is 210202120189. The next prime is 210202120229. The reversal of 210202120221 is 122021202012.

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

It is not a de Polignac number, because 210202120221 - 2⁵ = 210202120189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210202120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210202120229) 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, 854480041 + ... + 854480286.

It is an arithmetic number, because the mean of its divisors is an integer number (35888166888).

Almost surely, 2^210202120221 is an apocalyptic number.

It is an amenable number.

210202120221 is a deficient number, since it is larger than the sum of its proper divisors (76903214883).

210202120221 is a wasteful number, since it uses less digits than its factorization.

210202120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708960371.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 210202120221 its reverse (122021202012), we get a palindrome (332223322233).

The spelling of 210202120221 in words is "two hundred ten billion, two hundred two million, one hundred twenty thousand, two hundred twenty-one".