102111012212201 has 4 divisors (see below), whose sum is σ = 102111253899732. Its totient is φ = 102110770524672.

The previous prime is 102111012212161. The next prime is 102111012212239. The reversal of 102111012212201 is 102212210111201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74253981555625 + 27857030656576 = 8617075^2 + 5277976^2 .

It is a cyclic number.

It is not a de Polignac number, because 102111012212201 - 2³⁰ = 102109938470377 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 102111012212201.

It is not an unprimeable number, because it can be changed into a prime (102111012212291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120208916 + ... + 121055381.

It is an arithmetic number, because the mean of its divisors is an integer number (25527813474933).

Almost surely, 2^{102111012212201} is an apocalyptic number.

It is an amenable number.

102111012212201 is a deficient number, since it is larger than the sum of its proper divisors (241687531).

102111012212201 is an equidigital number, since it uses as much as digits as its factorization.

102111012212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241687530.

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

Adding to 102111012212201 its reverse (102212210111201), we get a palindrome (204323222323402).

The spelling of 102111012212201 in words is "one hundred two trillion, one hundred eleven billion, twelve million, two hundred twelve thousand, two hundred one".