102011321249 has 2 divisors, whose sum is σ = 102011321250. Its totient is φ = 102011321248.

The previous prime is 102011321219. The next prime is 102011321267. The reversal of 102011321249 is 942123110201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82820206225 + 19191115024 = 287785^2 + 138532^2 .

It is a cyclic number.

It is not a de Polignac number, because 102011321249 - 2¹⁶ = 102011255713 is a prime.

It is not a weakly prime, because it can be changed into another prime (102011321219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005660624 + 51005660625.

It is an arithmetic number, because the mean of its divisors is an integer number (51005660625).

Almost surely, 2^102011321249 is an apocalyptic number.

It is an amenable number.

102011321249 is a deficient number, since it is larger than the sum of its proper divisors (1).

102011321249 is an equidigital number, since it uses as much as digits as its factorization.

102011321249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 102011321249 in words is "one hundred two billion, eleven million, three hundred twenty-one thousand, two hundred forty-nine".