6201551167221 has 16 divisors (see below), whose sum is σ = 8278060114368. Its totient is φ = 4129707456000.

The previous prime is 6201551167171. The next prime is 6201551167237. The reversal of 6201551167221 is 1227611551026.

It is not a de Polignac number, because 6201551167221 - 2⁹ = 6201551166709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6201551167221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6201551167291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9180741 + ... + 9833061.

It is an arithmetic number, because the mean of its divisors is an integer number (517378757148).

Almost surely, 2^{6201551167221} is an apocalyptic number.

It is an amenable number.

6201551167221 is a deficient number, since it is larger than the sum of its proper divisors (2076508947147).

6201551167221 is a wasteful number, since it uses less digits than its factorization.

6201551167221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655892.

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 6201551167221 in words is "six trillion, two hundred one billion, five hundred fifty-one million, one hundred sixty-seven thousand, two hundred twenty-one".