213113211401 has 2 divisors, whose sum is σ = 213113211402. Its totient is φ = 213113211400.

The previous prime is 213113211397. The next prime is 213113211407. The reversal of 213113211401 is 104112311312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208451599225 + 4661612176 = 456565^2 + 68276^2 .

It is a cyclic number.

It is not a de Polignac number, because 213113211401 - 2² = 213113211397 is a prime.

It is not a weakly prime, because it can be changed into another prime (213113211407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106556605700 + 106556605701.

It is an arithmetic number, because the mean of its divisors is an integer number (106556605701).

Almost surely, 2^213113211401 is an apocalyptic number.

It is an amenable number.

213113211401 is a deficient number, since it is larger than the sum of its proper divisors (1).

213113211401 is an equidigital number, since it uses as much as digits as its factorization.

213113211401 is an evil number, because the sum of its binary digits is even.

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

Adding to 213113211401 its reverse (104112311312), we get a palindrome (317225522713).

The spelling of 213113211401 in words is "two hundred thirteen billion, one hundred thirteen million, two hundred eleven thousand, four hundred one".