102111122021201 has 16 divisors (see below), whose sum is σ = 105102190921728. Its totient is φ = 99148481308800.

The previous prime is 102111122021173. The next prime is 102111122021203. The reversal of 102111122021201 is 102120221111201.

It is a cyclic number.

It is not a de Polignac number, because 102111122021201 - 2²² = 102111117826897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102111122021201.

It is not an unprimeable number, because it can be changed into a prime (102111122021203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18471581 + ... + 23354261.

It is an arithmetic number, because the mean of its divisors is an integer number (6568886932608).

Almost surely, 2^{102111122021201} is an apocalyptic number.

It is an amenable number.

102111122021201 is a deficient number, since it is larger than the sum of its proper divisors (2991068900527).

102111122021201 is a wasteful number, since it uses less digits than its factorization.

102111122021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4885592.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102111122021201 its reverse (102120221111201), we get a palindrome (204231343132402).

The spelling of 102111122021201 in words is "one hundred two trillion, one hundred eleven billion, one hundred twenty-two million, twenty-one thousand, two hundred one".