210120022209 has 4 divisors (see below), whose sum is σ = 280160029616. Its totient is φ = 140080014804.

The previous prime is 210120022207. The next prime is 210120022327. The reversal of 210120022209 is 902220021012.

It is a happy number.

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 210120022209 - 2¹ = 210120022207 is a prime.

It is a super-2 number, since 2×210120022209² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210120022201) 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, 35020003699 + ... + 35020003704.

It is an arithmetic number, because the mean of its divisors is an integer number (70040007404).

Almost surely, 2^210120022209 is an apocalyptic number.

It is an amenable number.

210120022209 is a deficient number, since it is larger than the sum of its proper divisors (70040007407).

210120022209 is an equidigital number, since it uses as much as digits as its factorization.

210120022209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70040007406.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 210120022209 in words is "two hundred ten billion, one hundred twenty million, twenty-two thousand, two hundred nine".