215020274401 has 2 divisors, whose sum is σ = 215020274402. Its totient is φ = 215020274400.

The previous prime is 215020274383. The next prime is 215020274407. The reversal of 215020274401 is 104472020512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174932226001 + 40088048400 = 418249^2 + 200220^2 .

It is a cyclic number.

It is not a de Polignac number, because 215020274401 - 2⁵ = 215020274369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215020274401.

It is not a weakly prime, because it can be changed into another prime (215020274407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107510137200 + 107510137201.

It is an arithmetic number, because the mean of its divisors is an integer number (107510137201).

Almost surely, 2^215020274401 is an apocalyptic number.

It is an amenable number.

215020274401 is a deficient number, since it is larger than the sum of its proper divisors (1).

215020274401 is an equidigital number, since it uses as much as digits as its factorization.

215020274401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 28.

Adding to 215020274401 its reverse (104472020512), we get a palindrome (319492294913).

The spelling of 215020274401 in words is "two hundred fifteen billion, twenty million, two hundred seventy-four thousand, four hundred one".