210122209993 has 4 divisors (see below), whose sum is σ = 214592895360. Its totient is φ = 205651524628.

The previous prime is 210122209967. The next prime is 210122210009. The reversal of 210122209993 is 399902221012.

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 not a de Polignac number, because 210122209993 - 2¹⁷ = 210122078921 is a prime.

It is a super-3 number, since 3×210122209993³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210122206993) 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, 2235342613 + ... + 2235342706.

It is an arithmetic number, because the mean of its divisors is an integer number (53648223840).

Almost surely, 2^210122209993 is an apocalyptic number.

It is an amenable number.

210122209993 is a deficient number, since it is larger than the sum of its proper divisors (4470685367).

210122209993 is an equidigital number, since it uses as much as digits as its factorization.

210122209993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470685366.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 210122209993 in words is "two hundred ten billion, one hundred twenty-two million, two hundred nine thousand, nine hundred ninety-three".