20200001221111 has 8 divisors (see below), whose sum is σ = 21078307160064. Its totient is φ = 19321699033560.

The previous prime is 20200001221063. The next prime is 20200001221139. The reversal of 20200001221111 is 11112210000202.

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 20200001221111 - 2¹¹ = 20200001219063 is a prime.

It is a super-2 number, since 2×20200001221111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200001221091 and 20200001221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200001221811) 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, 20260266 + ... + 21233896.

It is an arithmetic number, because the mean of its divisors is an integer number (2634788395008).

Almost surely, 2^{20200001221111} is an apocalyptic number.

20200001221111 is a deficient number, since it is larger than the sum of its proper divisors (878305938953).

20200001221111 is an equidigital number, since it uses as much as digits as its factorization.

20200001221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875701.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20200001221111 its reverse (11112210000202), we get a palindrome (31312211221313).

The spelling of 20200001221111 in words is "twenty trillion, two hundred billion, one million, two hundred twenty-one thousand, one hundred eleven".