102111315049 has 2 divisors, whose sum is σ = 102111315050. Its totient is φ = 102111315048.

The previous prime is 102111315029. The next prime is 102111315143. The reversal of 102111315049 is 940513111201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97989033024 + 4122282025 = 313032^2 + 64205^2 .

It is a cyclic number.

It is not a de Polignac number, because 102111315049 - 2²³ = 102102926441 is a prime.

It is a super-2 number, since 2×102111315049² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102111315029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055657524 + 51055657525.

It is an arithmetic number, because the mean of its divisors is an integer number (51055657525).

Almost surely, 2^102111315049 is an apocalyptic number.

It is an amenable number.

102111315049 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111315049 is an equidigital number, since it uses as much as digits as its factorization.

102111315049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 102111315049 in words is "one hundred two billion, one hundred eleven million, three hundred fifteen thousand, forty-nine".