111021220043 has 2 divisors, whose sum is σ = 111021220044. Its totient is φ = 111021220042.

The previous prime is 111021220039. The next prime is 111021220067. The reversal of 111021220043 is 340022120111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111021220043 - 2² = 111021220039 is a prime.

It is a super-2 number, since 2×111021220043² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111021220643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510610021 + 55510610022.

It is an arithmetic number, because the mean of its divisors is an integer number (55510610022).

Almost surely, 2^111021220043 is an apocalyptic number.

111021220043 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021220043 is an equidigital number, since it uses as much as digits as its factorization.

111021220043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 111021220043 its reverse (340022120111), we get a palindrome (451043340154).

The spelling of 111021220043 in words is "one hundred eleven billion, twenty-one million, two hundred twenty thousand, forty-three".