202122221011 has 4 divisors (see below), whose sum is σ = 209091952800. Its totient is φ = 195152489224.

The previous prime is 202122220939. The next prime is 202122221071. The reversal of 202122221011 is 110122221202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202122221011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202122221071) 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, 3484865851 + ... + 3484865908.

It is an arithmetic number, because the mean of its divisors is an integer number (52272988200).

Almost surely, 2^202122221011 is an apocalyptic number.

202122221011 is a deficient number, since it is larger than the sum of its proper divisors (6969731789).

202122221011 is an equidigital number, since it uses as much as digits as its factorization.

202122221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6969731788.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202122221011 its reverse (110122221202), we get a palindrome (312244442213).

The spelling of 202122221011 in words is "two hundred two billion, one hundred twenty-two million, two hundred twenty-one thousand, eleven".