20021200222111 has 8 divisors (see below), whose sum is σ = 21842172622800. Its totient is φ = 18200371703040.

The previous prime is 20021200222087. The next prime is 20021200222139. The reversal of 20021200222111 is 11122200212002.

It is a happy number.

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 20021200222111 - 2¹⁵ = 20021200189343 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 (20021200222141) 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, 35679346 + ... + 36236143.

It is an arithmetic number, because the mean of its divisors is an integer number (2730271577850).

Almost surely, 2^{20021200222111} is an apocalyptic number.

20021200222111 is a deficient number, since it is larger than the sum of its proper divisors (1820972400689).

20021200222111 is a wasteful number, since it uses less digits than its factorization.

20021200222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71940809.

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

Adding to 20021200222111 its reverse (11122200212002), we get a palindrome (31143400434113).

The spelling of 20021200222111 in words is "twenty trillion, twenty-one billion, two hundred million, two hundred twenty-two thousand, one hundred eleven".