1220003111111 has 8 divisors (see below), whose sum is σ = 1222056111600. Its totient is φ = 1217950316352.

The previous prime is 1220003111101. The next prime is 1220003111191. The reversal of 1220003111111 is 1111113000221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220003111111 - 2³⁴ = 1202823241927 is a prime.

It is a super-2 number, since 2×1220003111111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220003111101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15993740 + ... + 16069838.

It is an arithmetic number, because the mean of its divisors is an integer number (152757013950).

Almost surely, 2^{1220003111111} is an apocalyptic number.

1220003111111 is a deficient number, since it is larger than the sum of its proper divisors (2053000489).

1220003111111 is an equidigital number, since it uses as much as digits as its factorization.

1220003111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102865.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1220003111111 its reverse (1111113000221), we get a palindrome (2331116111332).

The spelling of 1220003111111 in words is "one trillion, two hundred twenty billion, three million, one hundred eleven thousand, one hundred eleven".