1802202220111 has 4 divisors (see below), whose sum is σ = 1802207133424. Its totient is φ = 1802197306800.

The previous prime is 1802202220103. The next prime is 1802202220127. The reversal of 1802202220111 is 1110222022081.

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 1802202220111 - 2³ = 1802202220103 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 (1802202220411) 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, 1857795 + ... + 2656276.

It is an arithmetic number, because the mean of its divisors is an integer number (450551783356).

Almost surely, 2^{1802202220111} is an apocalyptic number.

1802202220111 is a deficient number, since it is larger than the sum of its proper divisors (4913313).

1802202220111 is an equidigital number, since it uses as much as digits as its factorization.

1802202220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4913312.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 1802202220111 its reverse (1110222022081), we get a palindrome (2912424242192).

The spelling of 1802202220111 in words is "one trillion, eight hundred two billion, two hundred two million, two hundred twenty thousand, one hundred eleven".