220212211111 has 2 divisors, whose sum is σ = 220212211112. Its totient is φ = 220212211110.

The previous prime is 220212211091. The next prime is 220212211117. The reversal of 220212211111 is 111112212022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220212211111 - 2²⁷ = 220077993383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220212211117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110106105555 + 110106105556.

It is an arithmetic number, because the mean of its divisors is an integer number (110106105556).

Almost surely, 2^220212211111 is an apocalyptic number.

220212211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

220212211111 is an equidigital number, since it uses as much as digits as its factorization.

220212211111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220212211111 its reverse (111112212022), we get a palindrome (331324423133).

The spelling of 220212211111 in words is "two hundred twenty billion, two hundred twelve million, two hundred eleven thousand, one hundred eleven".