23212131012011 has 16 divisors (see below), whose sum is σ = 24032841588000. Its totient is φ = 22392776313600.

The previous prime is 23212131011983. The next prime is 23212131012041. The reversal of 23212131012011 is 11021013121232.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23212131012011 is a prime.

It is a super-2 number, since 2×23212131012011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23212131012041) 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, 629053640 + ... + 629090538.

It is an arithmetic number, because the mean of its divisors is an integer number (1502052599250).

Almost surely, 2^{23212131012011} is an apocalyptic number.

23212131012011 is a deficient number, since it is larger than the sum of its proper divisors (820710575989).

23212131012011 is a wasteful number, since it uses less digits than its factorization.

23212131012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54670.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 23212131012011 its reverse (11021013121232), we get a palindrome (34233144133243).

The spelling of 23212131012011 in words is "twenty-three trillion, two hundred twelve billion, one hundred thirty-one million, twelve thousand, eleven".