211212131112231 has 16 divisors (see below), whose sum is σ = 284411697819648. Its totient is φ = 139414842100800.

The previous prime is 211212131112127. The next prime is 211212131112253. The reversal of 211212131112231 is 132211131212112.

It is not a de Polignac number, because 211212131112231 - 2¹⁸ = 211212130850087 is a prime.

It is a super-2 number, since 2×211212131112231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212133112231) 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, 564336910 + ... + 564711051.

It is an arithmetic number, because the mean of its divisors is an integer number (17775731113728).

Almost surely, 2^{211212131112231} is an apocalyptic number.

211212131112231 is a deficient number, since it is larger than the sum of its proper divisors (73199566707417).

211212131112231 is a wasteful number, since it uses less digits than its factorization.

211212131112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129048582.

The product of its digits is 288, while the sum is 24.

Adding to 211212131112231 its reverse (132211131212112), we get a palindrome (343423262324343).

The spelling of 211212131112231 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred thirty-one million, one hundred twelve thousand, two hundred thirty-one".