113133403511221 has 2 divisors, whose sum is σ = 113133403511222. Its totient is φ = 113133403511220.

The previous prime is 113133403511213. The next prime is 113133403511237. The reversal of 113133403511221 is 122115304331311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111674465652996 + 1458937858225 = 10567614^2 + 1207865^2 .

It is a cyclic number.

It is not a de Polignac number, because 113133403511221 - 2³ = 113133403511213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113133403551221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56566701755610 + 56566701755611.

It is an arithmetic number, because the mean of its divisors is an integer number (56566701755611).

Almost surely, 2^{113133403511221} is an apocalyptic number.

It is an amenable number.

113133403511221 is a deficient number, since it is larger than the sum of its proper divisors (1).

113133403511221 is an equidigital number, since it uses as much as digits as its factorization.

113133403511221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 113133403511221 its reverse (122115304331311), we get a palindrome (235248707842532).

The spelling of 113133403511221 in words is "one hundred thirteen trillion, one hundred thirty-three billion, four hundred three million, five hundred eleven thousand, two hundred twenty-one".