210000023122 has 4 divisors (see below), whose sum is σ = 315000034686. Its totient is φ = 105000011560.

The previous prime is 210000023119. The next prime is 210000023131. The reversal of 210000023122 is 221320000012.

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

It can be written as a sum of positive squares in only one way, i.e., 154803689401 + 55196333721 = 393451^2 + 234939^2 .

It is a super-2 number, since 2×210000023122² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52500005779 + ... + 52500005782.

Almost surely, 2^210000023122 is an apocalyptic number.

210000023122 is a deficient number, since it is larger than the sum of its proper divisors (105000011564).

210000023122 is a wasteful number, since it uses less digits than its factorization.

210000023122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105000011563.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 210000023122 its reverse (221320000012), we get a palindrome (431320023134).

The spelling of 210000023122 in words is "two hundred ten billion, twenty-three thousand, one hundred twenty-two".