212623354321 has 27 divisors (see below), whose sum is σ = 261115587369. Its totient is φ = 172606758408.

The previous prime is 212623354313. The next prime is 212623354327. The reversal of 212623354321 is 123453326212.

The square root of 212623354321 is 461111.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 212623354321 - 2³ = 212623354313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212623354327) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 61326030 + ... + 61329496.

Almost surely, 2^212623354321 is an apocalyptic number.

212623354321 is the 461111-st square number.

212623354321 is the 230556-th centered octagonal number.

It is an amenable number.

212623354321 is a deficient number, since it is larger than the sum of its proper divisors (48492233048).

212623354321 is an frugal number, since it uses more digits than its factorization.

212623354321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986 (or 3493 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The spelling of 212623354321 in words is "two hundred twelve billion, six hundred twenty-three million, three hundred fifty-four thousand, three hundred twenty-one".