1220031000111 has 24 divisors (see below), whose sum is σ = 2064319617024. Its totient is φ = 633782336880.

The previous prime is 1220031000109. The next prime is 1220031000121. The reversal of 1220031000111 is 1110001300221.

It is not a de Polignac number, because 1220031000111 - 2¹ = 1220031000109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220031000121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 377249775 + ... + 377253008.

It is an arithmetic number, because the mean of its divisors is an integer number (86013317376).

Almost surely, 2^{1220031000111} is an apocalyptic number.

1220031000111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220031000111 is a deficient number, since it is larger than the sum of its proper divisors (844288616913).

1220031000111 is a wasteful number, since it uses less digits than its factorization.

1220031000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754502811 (or 754502804 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 1220031000111 its reverse (1110001300221), we get a palindrome (2330032300332).

The spelling of 1220031000111 in words is "one trillion, two hundred twenty billion, thirty-one million, one hundred eleven", and thus it is an aban number.