221533606552241 has 16 divisors (see below), whose sum is σ = 221904900307584. Its totient is φ = 221162594601984.

The previous prime is 221533606552199. The next prime is 221533606552249. The reversal of 221533606552241 is 142255606335122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221533606552241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221533606552249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31751982545 + ... + 31751989521.

It is an arithmetic number, because the mean of its divisors is an integer number (13869056269224).

Almost surely, 2^{221533606552241} is an apocalyptic number.

It is an amenable number.

221533606552241 is a deficient number, since it is larger than the sum of its proper divisors (371293755343).

221533606552241 is an equidigital number, since it uses as much as digits as its factorization.

221533606552241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20200.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 221533606552241 in words is "two hundred twenty-one trillion, five hundred thirty-three billion, six hundred six million, five hundred fifty-two thousand, two hundred forty-one".