233111011111212 has 48 divisors (see below), whose sum is σ = 585784609113312. Its totient is φ = 71724202268160.

The previous prime is 233111011111211. The next prime is 233111011111261. The reversal of 233111011111212 is 212111110111332.

It is not an unprimeable number, because it can be changed into a prime (233111011111211) 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, 18605343 + ... + 28502294.

It is an arithmetic number, because the mean of its divisors is an integer number (12203846023194).

Almost surely, 2^{233111011111212} is an apocalyptic number.

It is an amenable number.

233111011111212 is an abundant number, since it is smaller than the sum of its proper divisors (352673598002100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

233111011111212 is a wasteful number, since it uses less digits than its factorization.

233111011111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47139378 (or 47139376 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 233111011111212 its reverse (212111110111332), we get a palindrome (445222121222544).

The spelling of 233111011111212 in words is "two hundred thirty-three trillion, one hundred eleven billion, eleven million, one hundred eleven thousand, two hundred twelve".