102111202101211 has 4 divisors (see below), whose sum is σ = 102121074605232. Its totient is φ = 102101329597192.

The previous prime is 102111202101131. The next prime is 102111202101221. The reversal of 102111202101211 is 112101202111201.

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

It is a cyclic number.

It is not a de Polignac number, because 102111202101211 - 2¹⁵ = 102111202068443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102111202101221) 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, 4936236496 + ... + 4936257181.

It is an arithmetic number, because the mean of its divisors is an integer number (25530268651308).

Almost surely, 2^{102111202101211} is an apocalyptic number.

102111202101211 is a deficient number, since it is larger than the sum of its proper divisors (9872504021).

102111202101211 is an equidigital number, since it uses as much as digits as its factorization.

102111202101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9872504020.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 102111202101211 its reverse (112101202111201), we get a palindrome (214212404212412).

The spelling of 102111202101211 in words is "one hundred two trillion, one hundred eleven billion, two hundred two million, one hundred one thousand, two hundred eleven".