213012233122 has 32 divisors (see below), whose sum is σ = 356091306480. Its totient is φ = 94888765440.

The previous prime is 213012233107. The next prime is 213012233141. The reversal of 213012233122 is 221332210312.

It can be written as a sum of positive squares in 8 ways, for example, as 48175421121 + 164836812001 = 219489^2 + 406001^2 .

It is a super-2 number, since 2×213012233122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213012233093 and 213012233102.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2086222 + ... + 2185942.

Almost surely, 2^213012233122 is an apocalyptic number.

213012233122 is a deficient number, since it is larger than the sum of its proper divisors (143079073358).

213012233122 is a wasteful number, since it uses less digits than its factorization.

213012233122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102598.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213012233122 its reverse (221332210312), we get a palindrome (434344443434).

The spelling of 213012233122 in words is "two hundred thirteen billion, twelve million, two hundred thirty-three thousand, one hundred twenty-two".