210200222021 has 4 divisors (see below), whose sum is σ = 210480116544. Its totient is φ = 209920327500.

The previous prime is 210200222009. The next prime is 210200222027. The reversal of 210200222021 is 120222002012.

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 a de Polignac number, because none of the positive numbers 2^k-210200222021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210200221987 and 210200222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210200222027) 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, 139946135 + ... + 139947636.

It is an arithmetic number, because the mean of its divisors is an integer number (52620029136).

Almost surely, 2^210200222021 is an apocalyptic number.

It is an amenable number.

210200222021 is a deficient number, since it is larger than the sum of its proper divisors (279894523).

210200222021 is an equidigital number, since it uses as much as digits as its factorization.

210200222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279894522.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 210200222021 its reverse (120222002012), we get a palindrome (330422224033).

The spelling of 210200222021 in words is "two hundred ten billion, two hundred million, two hundred twenty-two thousand, twenty-one".