102120137092 has 6 divisors (see below), whose sum is σ = 178710239918. Its totient is φ = 51060068544.

The previous prime is 102120137089. The next prime is 102120137111. The reversal of 102120137092 is 290731021201.

It can be written as a sum of positive squares in only one way, i.e., 98574649156 + 3545487936 = 313966^2 + 59544^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102120137092.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12765017133 + ... + 12765017140.

Almost surely, 2^102120137092 is an apocalyptic number.

It is an amenable number.

102120137092 is a deficient number, since it is larger than the sum of its proper divisors (76590102826).

102120137092 is a wasteful number, since it uses less digits than its factorization.

102120137092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25530034277 (or 25530034275 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

Adding to 102120137092 its reverse (290731021201), we get a palindrome (392851158293).

The spelling of 102120137092 in words is "one hundred two billion, one hundred twenty million, one hundred thirty-seven thousand, ninety-two".