1220111000611 has 2 divisors, whose sum is σ = 1220111000612. Its totient is φ = 1220111000610.

The previous prime is 1220111000561. The next prime is 1220111000657. The reversal of 1220111000611 is 1160001110221.

It is a strong prime.

It is an emirp because it is prime and its reverse (1160001110221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220111000611 - 2⁹ = 1220111000099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220111007611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610055500305 + 610055500306.

It is an arithmetic number, because the mean of its divisors is an integer number (610055500306).

Almost surely, 2^{1220111000611} is an apocalyptic number.

1220111000611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220111000611 is an equidigital number, since it uses as much as digits as its factorization.

1220111000611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1220111000611 its reverse (1160001110221), we get a palindrome (2380112110832).

The spelling of 1220111000611 in words is "one trillion, two hundred twenty billion, one hundred eleven million, six hundred eleven", and thus it is an aban number.