1022112212111 has 4 divisors (see below), whose sum is σ = 1055083573824. Its totient is φ = 989140850400.

The previous prime is 1022112212101. The next prime is 1022112212137. The reversal of 1022112212111 is 1112122112201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022112212111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022112212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022112212101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16485680810 + ... + 16485680871.

It is an arithmetic number, because the mean of its divisors is an integer number (263770893456).

Almost surely, 2^{1022112212111} is an apocalyptic number.

1022112212111 is a deficient number, since it is larger than the sum of its proper divisors (32971361713).

1022112212111 is an equidigital number, since it uses as much as digits as its factorization.

1022112212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32971361712.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1022112212111 its reverse (1112122112201), we get a palindrome (2134234324312).

The spelling of 1022112212111 in words is "one trillion, twenty-two billion, one hundred twelve million, two hundred twelve thousand, one hundred eleven".