1011220001111 has 4 divisors (see below), whose sum is σ = 1011242881824. Its totient is φ = 1011197120400.

The previous prime is 1011220001083. The next prime is 1011220001149. The reversal of 1011220001111 is 1111000221101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011220001111 - 2¹⁴ = 1011219984727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011220001092 and 1011220001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011220001411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11373935 + ... + 11462496.

It is an arithmetic number, because the mean of its divisors is an integer number (252810720456).

Almost surely, 2^{1011220001111} is an apocalyptic number.

1011220001111 is a deficient number, since it is larger than the sum of its proper divisors (22880713).

1011220001111 is an equidigital number, since it uses as much as digits as its factorization.

1011220001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22880712.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1011220001111 its reverse (1111000221101), we get a palindrome (2122220222212).

The spelling of 1011220001111 in words is "one trillion, eleven billion, two hundred twenty million, one thousand, one hundred eleven".