22020221212111 has 4 divisors (see below), whose sum is σ = 22029257004952. Its totient is φ = 22011185419272.

The previous prime is 22020221212081. The next prime is 22020221212127. The reversal of 22020221212111 is 11121212202022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22020221212111 - 2¹⁹ = 22020220687823 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 (22020221212181) 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, 4517892765 + ... + 4517897638.

It is an arithmetic number, because the mean of its divisors is an integer number (5507314251238).

Almost surely, 2^{22020221212111} is an apocalyptic number.

22020221212111 is a deficient number, since it is larger than the sum of its proper divisors (9035792841).

22020221212111 is an equidigital number, since it uses as much as digits as its factorization.

22020221212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9035792840.

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

Adding to 22020221212111 its reverse (11121212202022), we get a palindrome (33141433414133).

The spelling of 22020221212111 in words is "twenty-two trillion, twenty billion, two hundred twenty-one million, two hundred twelve thousand, one hundred eleven".