1021012222111 has 4 divisors (see below), whose sum is σ = 1166871110992. Its totient is φ = 875153333232.

The previous prime is 1021012222067. The next prime is 1021012222193. The reversal of 1021012222111 is 1112222101201.

1021012222111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1021012222111 - 2²⁷ = 1020878004383 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 (1021012226111) 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, 72929444430 + ... + 72929444443.

It is an arithmetic number, because the mean of its divisors is an integer number (291717777748).

Almost surely, 2^{1021012222111} is an apocalyptic number.

1021012222111 is a deficient number, since it is larger than the sum of its proper divisors (145858888881).

1021012222111 is an equidigital number, since it uses as much as digits as its factorization.

1021012222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145858888880.

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

Adding to 1021012222111 its reverse (1112222101201), we get a palindrome (2133234323312).

The spelling of 1021012222111 in words is "one trillion, twenty-one billion, twelve million, two hundred twenty-two thousand, one hundred eleven".