215215104001 has 2 divisors, whose sum is σ = 215215104002. Its totient is φ = 215215104000.

The previous prime is 215215103981. The next prime is 215215104019. The reversal of 215215104001 is 100401512512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212903802225 + 2311301776 = 461415^2 + 48076^2 .

It is a cyclic number.

It is not a de Polignac number, because 215215104001 - 2²³ = 215206715393 is a prime.

It is a super-2 number, since 2×215215104001² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (215215504001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107607552000 + 107607552001.

It is an arithmetic number, because the mean of its divisors is an integer number (107607552001).

Almost surely, 2^215215104001 is an apocalyptic number.

It is an amenable number.

215215104001 is a deficient number, since it is larger than the sum of its proper divisors (1).

215215104001 is an equidigital number, since it uses as much as digits as its factorization.

215215104001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 215215104001 its reverse (100401512512), we get a palindrome (315616616513).

The spelling of 215215104001 in words is "two hundred fifteen billion, two hundred fifteen million, one hundred four thousand, one".