102111566245 has 32 divisors (see below), whose sum is σ = 138268779264. Its totient is φ = 71827430400.

The previous prime is 102111566231. The next prime is 102111566251. The reversal of 102111566245 is 542665111201.

It is not a de Polignac number, because 102111566245 - 2⁹ = 102111565733 is a prime.

It is a super-2 number, since 2×102111566245² (a number of 23 digits) contains 22 as substring.

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 102111566245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218590 + ... + 502000.

It is an arithmetic number, because the mean of its divisors is an integer number (4320899352).

Almost surely, 2^102111566245 is an apocalyptic number.

It is an amenable number.

102111566245 is a deficient number, since it is larger than the sum of its proper divisors (36157213019).

102111566245 is a wasteful number, since it uses less digits than its factorization.

102111566245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283693.

The product of its (nonzero) digits is 14400, while the sum is 34.

Adding to 102111566245 its reverse (542665111201), we get a palindrome (644776677446).

The spelling of 102111566245 in words is "one hundred two billion, one hundred eleven million, five hundred sixty-six thousand, two hundred forty-five".