212231323101 has 16 divisors (see below), whose sum is σ = 325541838848. Its totient is φ = 120471894000.

The previous prime is 212231323097. The next prime is 212231323219. The reversal of 212231323101 is 101323132212.

It is not a de Polignac number, because 212231323101 - 2² = 212231323097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212231323001) 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, 33461245 + ... + 33467586.

It is an arithmetic number, because the mean of its divisors is an integer number (20346364928).

Almost surely, 2^212231323101 is an apocalyptic number.

212231323101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212231323101 is a deficient number, since it is larger than the sum of its proper divisors (113310515747).

212231323101 is a wasteful number, since it uses less digits than its factorization.

212231323101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66928992.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212231323101 its reverse (101323132212), we get a palindrome (313554455313).

The spelling of 212231323101 in words is "two hundred twelve billion, two hundred thirty-one million, three hundred twenty-three thousand, one hundred one".