221525035062401 has 8 divisors (see below), whose sum is σ = 253172287361280. Its totient is φ = 189877987443168.

The previous prime is 221525035062391. The next prime is 221525035062407. The reversal of 221525035062401 is 104260530525122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221525035062401 - 2³⁸ = 221250157155457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221525035062407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48843641 + ... + 53186006.

It is an arithmetic number, because the mean of its divisors is an integer number (31646535920160).

Almost surely, 2^{221525035062401} is an apocalyptic number.

It is an amenable number.

221525035062401 is a deficient number, since it is larger than the sum of its proper divisors (31647252298879).

221525035062401 is a wasteful number, since it uses less digits than its factorization.

221525035062401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102339823.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 221525035062401 its reverse (104260530525122), we get a palindrome (325785565587523).

The spelling of 221525035062401 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, thirty-five million, sixty-two thousand, four hundred one".