221012051041 has 4 divisors (see below), whose sum is σ = 223290525892. Its totient is φ = 218733576192.

The previous prime is 221012051033. The next prime is 221012051077. The reversal of 221012051041 is 140150210122.

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 167313721600 + 53698329441 = 409040^2 + 231729^2 .

It is a cyclic number.

It is not a de Polignac number, because 221012051041 - 2³ = 221012051033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012051081) 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, 1139237280 + ... + 1139237473.

It is an arithmetic number, because the mean of its divisors is an integer number (55822631473).

Almost surely, 2^221012051041 is an apocalyptic number.

It is an amenable number.

221012051041 is a deficient number, since it is larger than the sum of its proper divisors (2278474851).

221012051041 is an equidigital number, since it uses as much as digits as its factorization.

221012051041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278474850.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 221012051041 its reverse (140150210122), we get a palindrome (361162261163).

The spelling of 221012051041 in words is "two hundred twenty-one billion, twelve million, fifty-one thousand, forty-one".