1211032123231 has 16 divisors (see below), whose sum is σ = 1384956195840. Its totient is φ = 1037338172640.

The previous prime is 1211032123163. The next prime is 1211032123243. The reversal of 1211032123231 is 1323212301121.

It is not a de Polignac number, because 1211032123231 - 2¹³ = 1211032115039 is a prime.

It is a super-2 number, since 2×1211032123231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211032123031) 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, 91537125 + ... + 91550353.

It is an arithmetic number, because the mean of its divisors is an integer number (86559762240).

Almost surely, 2^{1211032123231} is an apocalyptic number.

1211032123231 is a deficient number, since it is larger than the sum of its proper divisors (173924072609).

1211032123231 is a wasteful number, since it uses less digits than its factorization.

1211032123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20934.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1211032123231 its reverse (1323212301121), we get a palindrome (2534244424352).

The spelling of 1211032123231 in words is "one trillion, two hundred eleven billion, thirty-two million, one hundred twenty-three thousand, two hundred thirty-one".