102221541115 has 4 divisors (see below), whose sum is σ = 122665849344. Its totient is φ = 81777232888.

The previous prime is 102221541053. The next prime is 102221541133. The reversal of 102221541115 is 511145122201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102221541115 - 2³¹ = 100074057467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102221541115.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10222154107 + ... + 10222154116.

It is an arithmetic number, because the mean of its divisors is an integer number (30666462336).

Almost surely, 2^102221541115 is an apocalyptic number.

102221541115 is a deficient number, since it is larger than the sum of its proper divisors (20444308229).

102221541115 is an equidigital number, since it uses as much as digits as its factorization.

102221541115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20444308228.

The product of its (nonzero) digits is 800, while the sum is 25.

Adding to 102221541115 its reverse (511145122201), we get a palindrome (613366663316).

The spelling of 102221541115 in words is "one hundred two billion, two hundred twenty-one million, five hundred forty-one thousand, one hundred fifteen".