220221111210111 has 12 divisors (see below), whose sum is σ = 347015084331240. Its totient is φ = 133467340127280.

The previous prime is 220221111210101. The next prime is 220221111210157. The reversal of 220221111210111 is 111012111122022.

It is a happy number.

220221111210111 is a `hidden beast` number, since 220 + 2 + 211 + 1 + 121 + 0 + 111 = 666.

It is not a de Polignac number, because 220221111210111 - 2⁹ = 220221111209599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221111210101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1112227834296 + ... + 1112227834493.

It is an arithmetic number, because the mean of its divisors is an integer number (28917923694270).

Almost surely, 2^{220221111210111} is an apocalyptic number.

220221111210111 is a deficient number, since it is larger than the sum of its proper divisors (126793973121129).

220221111210111 is a wasteful number, since it uses less digits than its factorization.

220221111210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224455668806 (or 2224455668803 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 220221111210111 its reverse (111012111122022), we get a palindrome (331233222332133).

The spelling of 220221111210111 in words is "two hundred twenty trillion, two hundred twenty-one billion, one hundred eleven million, two hundred ten thousand, one hundred eleven".