1111000202221 has 16 divisors (see below), whose sum is σ = 1384693542400. Its totient is φ = 867906119808.

The previous prime is 1111000202219. The next prime is 1111000202281. The reversal of 1111000202221 is 1222020001111.

It is not a de Polignac number, because 1111000202221 - 2¹ = 1111000202219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111000202281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77263656 + ... + 77278033.

It is an arithmetic number, because the mean of its divisors is an integer number (86543346400).

Almost surely, 2^{1111000202221} is an apocalyptic number.

It is an amenable number.

1111000202221 is a deficient number, since it is larger than the sum of its proper divisors (273693340179).

1111000202221 is a wasteful number, since it uses less digits than its factorization.

1111000202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154541788.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1111000202221 its reverse (1222020001111), we get a palindrome (2333020203332).

The spelling of 1111000202221 in words is "one trillion, one hundred eleven billion, two hundred two thousand, two hundred twenty-one".