20210201221111 has 8 divisors (see below), whose sum is σ = 22050999154944. Its totient is φ = 18369987772920.

The previous prime is 20210201221039. The next prime is 20210201221151. The reversal of 20210201221111 is 11112210201202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20210201221111 - 2⁷ = 20210201220983 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 (20210201221151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146049105 + ... + 146187418.

It is an arithmetic number, because the mean of its divisors is an integer number (2756374894368).

Almost surely, 2^{20210201221111} is an apocalyptic number.

20210201221111 is a deficient number, since it is larger than the sum of its proper divisors (1840797933833).

20210201221111 is a wasteful number, since it uses less digits than its factorization.

20210201221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292242821.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20210201221111 its reverse (11112210201202), we get a palindrome (31322411422313).

The spelling of 20210201221111 in words is "twenty trillion, two hundred ten billion, two hundred one million, two hundred twenty-one thousand, one hundred eleven".