102050121705 has 24 divisors (see below), whose sum is σ = 189938187072. Its totient is φ = 46651483872.

The previous prime is 102050121683. The next prime is 102050121713. The reversal of 102050121705 is 507121050201.

It is not a de Polignac number, because 102050121705 - 2¹⁷ = 102049990633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69421117 + ... + 69422586.

It is an arithmetic number, because the mean of its divisors is an integer number (7914091128).

Almost surely, 2^102050121705 is an apocalyptic number.

102050121705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102050121705 is a deficient number, since it is larger than the sum of its proper divisors (87888065367).

102050121705 is a wasteful number, since it uses less digits than its factorization.

102050121705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138843725 (or 138843718 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 24.

Adding to 102050121705 its reverse (507121050201), we get a palindrome (609171171906).

The spelling of 102050121705 in words is "one hundred two billion, fifty million, one hundred twenty-one thousand, seven hundred five".