1220000211011 has 4 divisors (see below), whose sum is σ = 1232577532872. Its totient is φ = 1207422889152.

The previous prime is 1220000211007. The next prime is 1220000211013. The reversal of 1220000211011 is 1101120000221.

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 1220000211011 - 2² = 1220000211007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220000210983 and 1220000211001.

It is not an unprimeable number, because it can be changed into a prime (1220000211013) 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, 6288660785 + ... + 6288660978.

It is an arithmetic number, because the mean of its divisors is an integer number (308144383218).

Almost surely, 2^{1220000211011} is an apocalyptic number.

1220000211011 is a deficient number, since it is larger than the sum of its proper divisors (12577321861).

1220000211011 is an equidigital number, since it uses as much as digits as its factorization.

1220000211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12577321860.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1220000211011 its reverse (1101120000221), we get a palindrome (2321120211232).

The spelling of 1220000211011 in words is "one trillion, two hundred twenty billion, two hundred eleven thousand, eleven".