210996223 has 4 divisors (see below), whose sum is σ = 211871968. Its totient is φ = 210120480.

The previous prime is 210996211. The next prime is 210996239. The reversal of 210996223 is 322699012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210996223 is a prime.

It is a super-2 number, since 2×210996223² = 89038812240531458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210996263) 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, 437511 + ... + 437992.

It is an arithmetic number, because the mean of its divisors is an integer number (52967992).

Almost surely, 2^210996223 is an apocalyptic number.

210996223 is a deficient number, since it is larger than the sum of its proper divisors (875745).

210996223 is an equidigital number, since it uses as much as digits as its factorization.

210996223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875744.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 210996223 is about 14525.7090360505. The cubic root of 210996223 is about 595.3306290380.

The spelling of 210996223 in words is "two hundred ten million, nine hundred ninety-six thousand, two hundred twenty-three".