201020222221111 has 4 divisors (see below), whose sum is σ = 212844941175312. Its totient is φ = 189195503266912.

The previous prime is 201020222221087. The next prime is 201020222221127. The reversal of 201020222221111 is 111122222020102.

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-201020222221111 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 (201020222221151) 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, 5912359477075 + ... + 5912359477108.

It is an arithmetic number, because the mean of its divisors is an integer number (53211235293828).

Almost surely, 2^{201020222221111} is an apocalyptic number.

201020222221111 is a deficient number, since it is larger than the sum of its proper divisors (11824718954201).

201020222221111 is a wasteful number, since it uses less digits than its factorization.

201020222221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11824718954200.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201020222221111 its reverse (111122222020102), we get a palindrome (312142444241213).

The spelling of 201020222221111 in words is "two hundred one trillion, twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred eleven".