102221561151 has 72 divisors (see below), whose sum is σ = 157617504720. Its totient is φ = 63757483776.

The previous prime is 102221561149. The next prime is 102221561177. The reversal of 102221561151 is 151165122201.

It is a happy number.

102221561151 is a `hidden beast` number, since 1 + 0 + 22 + 21 + 5 + 611 + 5 + 1 = 666.

It is not a de Polignac number, because 102221561151 - 2¹ = 102221561149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221561551) 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 71 ways as a sum of consecutive naturals, for example, 61689915 + ... + 61691571.

It is an arithmetic number, because the mean of its divisors is an integer number (2189132010).

Almost surely, 2^102221561151 is an apocalyptic number.

102221561151 is a deficient number, since it is larger than the sum of its proper divisors (55395943569).

102221561151 is a wasteful number, since it uses less digits than its factorization.

102221561151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 102221561151 its reverse (151165122201), we get a palindrome (253386683352).

The spelling of 102221561151 in words is "one hundred two billion, two hundred twenty-one million, five hundred sixty-one thousand, one hundred fifty-one".