102220340345 has 4 divisors (see below), whose sum is σ = 122664408420. Its totient is φ = 81776272272.

The previous prime is 102220340297. The next prime is 102220340363. The reversal of 102220340345 is 543043022201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543043022201 = 41 ⋅13244951761.

It can be written as a sum of positive squares in 2 ways, for example, as 19839285904 + 82381054441 = 140852^2 + 287021^2 .

It is a cyclic number.

It is not a de Polignac number, because 102220340345 - 2¹⁸ = 102220078201 is a prime.

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, 10222034030 + ... + 10222034039.

It is an arithmetic number, because the mean of its divisors is an integer number (30666102105).

Almost surely, 2^102220340345 is an apocalyptic number.

It is an amenable number.

102220340345 is a deficient number, since it is larger than the sum of its proper divisors (20444068075).

102220340345 is an equidigital number, since it uses as much as digits as its factorization.

102220340345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20444068074.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 102220340345 its reverse (543043022201), we get a palindrome (645263362546).

The spelling of 102220340345 in words is "one hundred two billion, two hundred twenty million, three hundred forty thousand, three hundred forty-five".