1021223311011 has 8 divisors (see below), whose sum is σ = 1512923423760. Its totient is φ = 680815540656.

The previous prime is 1021223311001. The next prime is 1021223311039. The reversal of 1021223311011 is 1101133221201.

It is not a de Polignac number, because 1021223311011 - 2²⁵ = 1021189756579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021223311001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18911542770 + ... + 18911542823.

It is an arithmetic number, because the mean of its divisors is an integer number (189115427970).

Almost surely, 2^{1021223311011} is an apocalyptic number.

1021223311011 is a deficient number, since it is larger than the sum of its proper divisors (491700112749).

1021223311011 is an equidigital number, since it uses as much as digits as its factorization.

1021223311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37823085602 (or 37823085596 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1021223311011 its reverse (1101133221201), we get a palindrome (2122356532212).

The spelling of 1021223311011 in words is "one trillion, twenty-one billion, two hundred twenty-three million, three hundred eleven thousand, eleven".