112131013011221 has 2 divisors, whose sum is σ = 112131013011222. Its totient is φ = 112131013011220.

The previous prime is 112131013011203. The next prime is 112131013011247. The reversal of 112131013011221 is 122110310131211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104731992838225 + 7399020172996 = 10233865^2 + 2720114^2 .

It is a cyclic number.

It is not a de Polignac number, because 112131013011221 - 2¹⁴ = 112131012994837 is a prime.

It is a super-2 number, since 2×112131013011221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 112131013011193 and 112131013011202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112131013013221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56065506505610 + 56065506505611.

It is an arithmetic number, because the mean of its divisors is an integer number (56065506505611).

Almost surely, 2^{112131013011221} is an apocalyptic number.

It is an amenable number.

112131013011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

112131013011221 is an equidigital number, since it uses as much as digits as its factorization.

112131013011221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 112131013011221 its reverse (122110310131211), we get a palindrome (234241323142432).

The spelling of 112131013011221 in words is "one hundred twelve trillion, one hundred thirty-one billion, thirteen million, eleven thousand, two hundred twenty-one".