213122331123 has 8 divisors (see below), whose sum is σ = 306021808848. Its totient is φ = 131152203744.

The previous prime is 213122331091. The next prime is 213122331131. The reversal of 213122331123 is 321133221312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213122331123 - 2⁵ = 213122331091 is a prime.

It is a super-2 number, since 2×213122331123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213122331093 and 213122331102.

It is not an unprimeable number, because it can be changed into a prime (213122331173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2732337540 + ... + 2732337617.

It is an arithmetic number, because the mean of its divisors is an integer number (38252726106).

Almost surely, 2^213122331123 is an apocalyptic number.

213122331123 is a deficient number, since it is larger than the sum of its proper divisors (92899477725).

213122331123 is a wasteful number, since it uses less digits than its factorization.

213122331123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464675173.

The product of its digits is 1296, while the sum is 24.

Adding to 213122331123 its reverse (321133221312), we get a palindrome (534255552435).

The spelling of 213122331123 in words is "two hundred thirteen billion, one hundred twenty-two million, three hundred thirty-one thousand, one hundred twenty-three".