1020112222111 has 4 divisors (see below), whose sum is σ = 1030212343224. Its totient is φ = 1010012101000.

The previous prime is 1020112222093. The next prime is 1020112222127. The reversal of 1020112222111 is 1112222110201.

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 1020112222111 - 2⁵ = 1020112222079 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 (1020112222511) 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, 5050060405 + ... + 5050060606.

It is an arithmetic number, because the mean of its divisors is an integer number (257553085806).

Almost surely, 2^{1020112222111} is an apocalyptic number.

1020112222111 is a deficient number, since it is larger than the sum of its proper divisors (10100121113).

1020112222111 is a wasteful number, since it uses less digits than its factorization.

1020112222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100121112.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1020112222111 its reverse (1112222110201), we get a palindrome (2132334332312).

The spelling of 1020112222111 in words is "one trillion, twenty billion, one hundred twelve million, two hundred twenty-two thousand, one hundred eleven".