1220432512111 has 2 divisors, whose sum is σ = 1220432512112. Its totient is φ = 1220432512110.

The previous prime is 1220432512097. The next prime is 1220432512129. The reversal of 1220432512111 is 1112152340221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220432512111 - 2²⁹ = 1219895641199 is a prime.

It is a super-3 number, since 3×1220432512111³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220432512181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610216256055 + 610216256056.

It is an arithmetic number, because the mean of its divisors is an integer number (610216256056).

Almost surely, 2^{1220432512111} is an apocalyptic number.

1220432512111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220432512111 is an equidigital number, since it uses as much as digits as its factorization.

1220432512111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 1220432512111 its reverse (1112152340221), we get a palindrome (2332584852332).

The spelling of 1220432512111 in words is "one trillion, two hundred twenty billion, four hundred thirty-two million, five hundred twelve thousand, one hundred eleven".