1011222222111 has 128 divisors (see below), whose sum is σ = 1595228774400. Its totient is φ = 632237322240.

The previous prime is 1011222222077. The next prime is 1011222222119. The reversal of 1011222222111 is 1112222221101.

It is not a de Polignac number, because 1011222222111 - 2⁷ = 1011222221983 is a prime.

It is a super-2 number, since 2×1011222222111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011222222119) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 895678995 + ... + 895680123.

It is an arithmetic number, because the mean of its divisors is an integer number (12462724800).

Almost surely, 2^{1011222222111} is an apocalyptic number.

1011222222111 is a deficient number, since it is larger than the sum of its proper divisors (584006552289).

1011222222111 is a wasteful number, since it uses less digits than its factorization.

1011222222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1011222222111 its reverse (1112222221101), we get a palindrome (2123444443212).

The spelling of 1011222222111 in words is "one trillion, eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred eleven".