102221122112111 has 4 divisors (see below), whose sum is σ = 103746810501912. Its totient is φ = 100695433722312.

The previous prime is 102221122112069. The next prime is 102221122112117. The reversal of 102221122112111 is 111211221122201.

It is a happy number.

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 102221122112111 - 2⁶ = 102221122112047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221122112117) 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, 762844194800 + ... + 762844194933.

It is an arithmetic number, because the mean of its divisors is an integer number (25936702625478).

Almost surely, 2^{102221122112111} is an apocalyptic number.

102221122112111 is a deficient number, since it is larger than the sum of its proper divisors (1525688389801).

102221122112111 is an equidigital number, since it uses as much as digits as its factorization.

102221122112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525688389800.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 102221122112111 its reverse (111211221122201), we get a palindrome (213432343234312).

The spelling of 102221122112111 in words is "one hundred two trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred eleven".