231040220202212 has 6 divisors (see below), whose sum is σ = 404320385353878. Its totient is φ = 115520110101104.

The previous prime is 231040220202203. The next prime is 231040220202223. The reversal of 231040220202212 is 212202022040132.

It can be written as a sum of positive squares in only one way, i.e., 203728976969956 + 27311243232256 = 14273366^2 + 5226016^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28880027525273 + ... + 28880027525280.

It is an arithmetic number, because the mean of its divisors is an integer number (67386730892313).

Almost surely, 2^{231040220202212} is an apocalyptic number.

It is an amenable number.

231040220202212 is a deficient number, since it is larger than the sum of its proper divisors (173280165151666).

231040220202212 is a wasteful number, since it uses less digits than its factorization.

231040220202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57760055050557 (or 57760055050555 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 231040220202212 its reverse (212202022040132), we get a palindrome (443242242242344).

The spelling of 231040220202212 in words is "two hundred thirty-one trillion, forty billion, two hundred twenty million, two hundred two thousand, two hundred twelve".