102120211101111 has 64 divisors (see below), whose sum is σ = 158994130099200. Its totient is φ = 58278500542080.

The previous prime is 102120211101071. The next prime is 102120211101113. The reversal of 102120211101111 is 111101112021201.

It is not a de Polignac number, because 102120211101111 - 2⁷ = 102120211100983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120211101113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5154192441 + ... + 5154212253.

It is an arithmetic number, because the mean of its divisors is an integer number (2484283282800).

Almost surely, 2^{102120211101111} is an apocalyptic number.

102120211101111 is a deficient number, since it is larger than the sum of its proper divisors (56873918998089).

102120211101111 is an equidigital number, since it uses as much as digits as its factorization.

102120211101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26101 (or 26087 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 102120211101111 its reverse (111101112021201), we get a palindrome (213221323122312).

The spelling of 102120211101111 in words is "one hundred two trillion, one hundred twenty billion, two hundred eleven million, one hundred one thousand, one hundred eleven".