213022330121 has 4 divisors (see below), whose sum is σ = 216201767952. Its totient is φ = 209842892292.

The previous prime is 213022330109. The next prime is 213022330163. The reversal of 213022330121 is 121033220312.

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 a de Polignac number, because none of the positive numbers 2^k-213022330121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213022330093 and 213022330102.

It is not an unprimeable number, because it can be changed into a prime (213022330181) 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, 1589718815 + ... + 1589718948.

It is an arithmetic number, because the mean of its divisors is an integer number (54050441988).

Almost surely, 2^213022330121 is an apocalyptic number.

It is an amenable number.

213022330121 is a deficient number, since it is larger than the sum of its proper divisors (3179437831).

213022330121 is an equidigital number, since it uses as much as digits as its factorization.

213022330121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179437830.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 213022330121 its reverse (121033220312), we get a palindrome (334055550433).

The spelling of 213022330121 in words is "two hundred thirteen billion, twenty-two million, three hundred thirty thousand, one hundred twenty-one".