1220011001101 has 2 divisors, whose sum is σ = 1220011001102. Its totient is φ = 1220011001100.

The previous prime is 1220011001071. The next prime is 1220011001113. The reversal of 1220011001101 is 1011001100221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1219599966025 + 411035076 = 1104355^2 + 20274^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220011001101 - 2⁷ = 1220011000973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220011001191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610005500550 + 610005500551.

It is an arithmetic number, because the mean of its divisors is an integer number (610005500551).

Almost surely, 2^{1220011001101} is an apocalyptic number.

It is an amenable number.

1220011001101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220011001101 is an equidigital number, since it uses as much as digits as its factorization.

1220011001101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1220011001101 its reverse (1011001100221), we get a palindrome (2231012101322).

The spelling of 1220011001101 in words is "one trillion, two hundred twenty billion, eleven million, one thousand, one hundred one".