102225871781 has 8 divisors (see below), whose sum is σ = 113089825728. Its totient is φ = 91623700000.

The previous prime is 102225871771. The next prime is 102225871793. The reversal of 102225871781 is 187178522201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102225871781 is a prime.

It is a super-2 number, since 2×102225871781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102225871771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65444720 + ... + 65446281.

It is an arithmetic number, because the mean of its divisors is an integer number (14136228216).

Almost surely, 2^102225871781 is an apocalyptic number.

102225871781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102225871781 is a deficient number, since it is larger than the sum of its proper divisors (10863953947).

102225871781 is a wasteful number, since it uses less digits than its factorization.

102225871781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130891083.

The product of its (nonzero) digits is 125440, while the sum is 44.

The spelling of 102225871781 in words is "one hundred two billion, two hundred twenty-five million, eight hundred seventy-one thousand, seven hundred eighty-one".