1220000101111 has 32 divisors (see below), whose sum is σ = 1418153269248. Its totient is φ = 1038622163040.

The previous prime is 1220000101097. The next prime is 1220000101121. The reversal of 1220000101111 is 1111010000221.

It is not a de Polignac number, because 1220000101111 - 2⁷ = 1220000100983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220000101121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2542240 + ... + 2983786.

It is an arithmetic number, because the mean of its divisors is an integer number (44317289664).

Almost surely, 2^{1220000101111} is an apocalyptic number.

1220000101111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220000101111 is a deficient number, since it is larger than the sum of its proper divisors (198153168137).

1220000101111 is a wasteful number, since it uses less digits than its factorization.

1220000101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441811.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1220000101111 its reverse (1111010000221), we get a palindrome (2331010101332).

The spelling of 1220000101111 in words is "one trillion, two hundred twenty billion, one hundred one thousand, one hundred eleven".