212011332331 has 16 divisors (see below), whose sum is σ = 225158070816. Its totient is φ = 198940525056.

The previous prime is 212011332311. The next prime is 212011332397. The reversal of 212011332331 is 133233110212.

It is a cyclic number.

It is not a de Polignac number, because 212011332331 - 2²³ = 212002943723 is a prime.

It is a super-2 number, since 2×212011332331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212011332311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8142225 + ... + 8168221.

It is an arithmetic number, because the mean of its divisors is an integer number (14072379426).

Almost surely, 2^212011332331 is an apocalyptic number.

212011332331 is a deficient number, since it is larger than the sum of its proper divisors (13146738485).

212011332331 is a wasteful number, since it uses less digits than its factorization.

212011332331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27438.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 212011332331 its reverse (133233110212), we get a palindrome (345244442543).

The spelling of 212011332331 in words is "two hundred twelve billion, eleven million, three hundred thirty-two thousand, three hundred thirty-one".