210222121231 has 4 divisors (see below), whose sum is σ = 211278514000. Its totient is φ = 209165728464.

The previous prime is 210222121229. The next prime is 210222121247. The reversal of 210222121231 is 132121222012.

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

It is a cyclic number.

It is not a de Polignac number, because 210222121231 - 2¹ = 210222121229 is a prime.

It is a super-2 number, since 2×210222121231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210222121199 and 210222121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210222121331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528196086 + ... + 528196483.

It is an arithmetic number, because the mean of its divisors is an integer number (52819628500).

Almost surely, 2^210222121231 is an apocalyptic number.

210222121231 is a deficient number, since it is larger than the sum of its proper divisors (1056392769).

210222121231 is a wasteful number, since it uses less digits than its factorization.

210222121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056392768.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 210222121231 its reverse (132121222012), we get a palindrome (342343343243).

The spelling of 210222121231 in words is "two hundred ten billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred thirty-one".