220221022121111 has 4 divisors (see below), whose sum is σ = 240241115041224. Its totient is φ = 200200929201000.

The previous prime is 220221022121101. The next prime is 220221022121117. The reversal of 220221022121111 is 111121220122022.

220221022121111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 220221022121111 - 2³⁴ = 220203842251927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221022121117) 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, 10010046460040 + ... + 10010046460061.

It is an arithmetic number, because the mean of its divisors is an integer number (60060278760306).

Almost surely, 2^{220221022121111} is an apocalyptic number.

220221022121111 is a deficient number, since it is larger than the sum of its proper divisors (20020092920113).

220221022121111 is a wasteful number, since it uses less digits than its factorization.

220221022121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20020092920112.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 220221022121111 its reverse (111121220122022), we get a palindrome (331342242243133).

The spelling of 220221022121111 in words is "two hundred twenty trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, one hundred eleven".