210022401 has 4 divisors (see below), whose sum is σ = 280029872. Its totient is φ = 140014932.

The previous prime is 210022391. The next prime is 210022441. The reversal of 210022401 is 104220012.

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 not a de Polignac number, because 210022401 - 2²⁵ = 176467969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210022441) 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, 35003731 + ... + 35003736.

It is an arithmetic number, because the mean of its divisors is an integer number (70007468).

Almost surely, 2^210022401 is an apocalyptic number.

It is an amenable number.

210022401 is a deficient number, since it is larger than the sum of its proper divisors (70007471).

210022401 is an equidigital number, since it uses as much as digits as its factorization.

210022401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70007470.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 210022401 is about 14492.1496335085. The cubic root of 210022401 is about 594.4133294131.

Adding to 210022401 its reverse (104220012), we get a palindrome (314242413).

The spelling of 210022401 in words is "two hundred ten million, twenty-two thousand, four hundred one".