202111221443 has 12 divisors (see below), whose sum is σ = 214740831552. Its totient is φ = 190185674880.

The previous prime is 202111221419. The next prime is 202111221461. The reversal of 202111221443 is 344122111202.

It is a de Polignac number, because none of the positive numbers 2^k-202111221443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202111221043) 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, 1497953 + ... + 1627293.

It is an arithmetic number, because the mean of its divisors is an integer number (17895069296).

Almost surely, 2^202111221443 is an apocalyptic number.

202111221443 is a deficient number, since it is larger than the sum of its proper divisors (12629610109).

202111221443 is a wasteful number, since it uses less digits than its factorization.

202111221443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134782 (or 134765 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 202111221443 its reverse (344122111202), we get a palindrome (546233332645).

The spelling of 202111221443 in words is "two hundred two billion, one hundred eleven million, two hundred twenty-one thousand, four hundred forty-three".