1011102222221 has 12 divisors (see below), whose sum is σ = 1266655531932. Its totient is φ = 799992966528.

The previous prime is 1011102222211. The next prime is 1011102222307. The reversal of 1011102222221 is 1222222011101.

It can be written as a sum of positive squares in 2 ways, for example, as 54498902500 + 956603319721 = 233450^2 + 978061^2 .

It is not a de Polignac number, because 1011102222221 - 2¹⁴ = 1011102205837 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011102222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011102222211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 793643180 + ... + 793644453.

It is an arithmetic number, because the mean of its divisors is an integer number (105554627661).

Almost surely, 2^{1011102222221} is an apocalyptic number.

It is an amenable number.

1011102222221 is a deficient number, since it is larger than the sum of its proper divisors (255553309711).

1011102222221 is a wasteful number, since it uses less digits than its factorization.

1011102222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587287660 (or 1587287653 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1011102222221 its reverse (1222222011101), we get a palindrome (2233324233322).

The spelling of 1011102222221 in words is "one trillion, eleven billion, one hundred two million, two hundred twenty-two thousand, two hundred twenty-one".