102111222011 has 4 divisors (see below), whose sum is σ = 102499477872. Its totient is φ = 101722966152.

The previous prime is 102111221957. The next prime is 102111222013. The reversal of 102111222011 is 110222111201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110222111201 = 118543 ⋅929807.

It is a cyclic number.

It is not a de Polignac number, because 102111222011 - 2¹⁴ = 102111205627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102111222013) 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, 194127536 + ... + 194128061.

It is an arithmetic number, because the mean of its divisors is an integer number (25624869468).

Almost surely, 2^102111222011 is an apocalyptic number.

102111222011 is a deficient number, since it is larger than the sum of its proper divisors (388255861).

102111222011 is an equidigital number, since it uses as much as digits as its factorization.

102111222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388255860.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102111222011 its reverse (110222111201), we get a palindrome (212333333212).

The spelling of 102111222011 in words is "one hundred two billion, one hundred eleven million, two hundred twenty-two thousand, eleven".