1220010020011 has 4 divisors (see below), whose sum is σ = 1220262562624. Its totient is φ = 1219757477400.

The previous prime is 1220010020003. The next prime is 1220010020023. The reversal of 1220010020011 is 1100200100221.

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 1220010020011 - 2³ = 1220010020003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220010020011.

It is not an unprimeable number, because it can be changed into a prime (1220010020071) 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, 126264060 + ... + 126273721.

It is an arithmetic number, because the mean of its divisors is an integer number (305065640656).

Almost surely, 2^{1220010020011} is an apocalyptic number.

1220010020011 is a deficient number, since it is larger than the sum of its proper divisors (252542613).

1220010020011 is an equidigital number, since it uses as much as digits as its factorization.

1220010020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252542612.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1220010020011 its reverse (1100200100221), we get a palindrome (2320210120232).

The spelling of 1220010020011 in words is "one trillion, two hundred twenty billion, ten million, twenty thousand, eleven".