205001221041 has 24 divisors (see below), whose sum is σ = 309183526080. Its totient is φ = 130642418016.

The previous prime is 205001221037. The next prime is 205001221043. The reversal of 205001221041 is 140122100502.

205001221041 is a `hidden beast` number, since 2 + 0 + 500 + 122 + 1 + 0 + 41 = 666.

It is not a de Polignac number, because 205001221041 - 2² = 205001221037 is a prime.

It is a super-2 number, since 2×205001221041² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205001221043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13255 + ... + 640451.

It is an arithmetic number, because the mean of its divisors is an integer number (12882646920).

Almost surely, 2^205001221041 is an apocalyptic number.

It is an amenable number.

205001221041 is a deficient number, since it is larger than the sum of its proper divisors (104182305039).

205001221041 is a wasteful number, since it uses less digits than its factorization.

205001221041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628805 (or 628802 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 205001221041 its reverse (140122100502), we get a palindrome (345123321543).

The spelling of 205001221041 in words is "two hundred five billion, one million, two hundred twenty-one thousand, forty-one".