215012442401 has 4 divisors (see below), whose sum is σ = 216915207492. Its totient is φ = 213109677312.

The previous prime is 215012442343. The next prime is 215012442439. The reversal of 215012442401 is 104244210512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60503700625 + 154508741776 = 245975^2 + 393076^2 .

It is a cyclic number.

It is not a de Polignac number, because 215012442401 - 2¹⁴ = 215012426017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215012442481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951382376 + ... + 951382601.

It is an arithmetic number, because the mean of its divisors is an integer number (54228801873).

Almost surely, 2^215012442401 is an apocalyptic number.

It is an amenable number.

215012442401 is a deficient number, since it is larger than the sum of its proper divisors (1902765091).

215012442401 is a wasteful number, since it uses less digits than its factorization.

215012442401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902765090.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 215012442401 its reverse (104244210512), we get a palindrome (319256652913).

The spelling of 215012442401 in words is "two hundred fifteen billion, twelve million, four hundred forty-two thousand, four hundred one".