23311234012221 has 12 divisors (see below), whose sum is σ = 33673343861820. Its totient is φ = 15540102028800.

The previous prime is 23311234012217. The next prime is 23311234012259. The reversal of 23311234012221 is 12221043211332.

23311234012221 is a `hidden beast` number, since 2 + 3 + 3 + 11 + 23 + 401 + 2 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2538012216996 + 20773221795225 = 1593114^2 + 4557765^2 .

It is not a de Polignac number, because 23311234012221 - 2² = 23311234012217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311234012021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59848930 + ... + 60237171.

It is an arithmetic number, because the mean of its divisors is an integer number (2806111988485).

Almost surely, 2^{23311234012221} is an apocalyptic number.

It is an amenable number.

23311234012221 is a deficient number, since it is larger than the sum of its proper divisors (10362109849599).

23311234012221 is a wasteful number, since it uses less digits than its factorization.

23311234012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120107676 (or 120107673 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 23311234012221 its reverse (12221043211332), we get a palindrome (35532277223553).

The spelling of 23311234012221 in words is "twenty-three trillion, three hundred eleven billion, two hundred thirty-four million, twelve thousand, two hundred twenty-one".