20000221111 has 8 divisors (see below), whose sum is σ = 22064034384. Its totient is φ = 18011455680.

The previous prime is 20000221099. The next prime is 20000221151. The reversal of 20000221111 is 11112200002.

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 20000221111 - 2⁷ = 20000220983 is a prime.

It is a super-4 number, since 4×20000221111⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000221151) 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, 18761401 + ... + 18762466.

It is an arithmetic number, because the mean of its divisors is an integer number (2758004298).

Almost surely, 2^20000221111 is an apocalyptic number.

20000221111 is a deficient number, since it is larger than the sum of its proper divisors (2063813273).

20000221111 is a wasteful number, since it uses less digits than its factorization.

20000221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37523921.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20000221111 its reverse (11112200002), we get a palindrome (31112421113).

The spelling of 20000221111 in words is "twenty billion, two hundred twenty-one thousand, one hundred eleven".