1121100222001 has 2 divisors, whose sum is σ = 1121100222002. Its totient is φ = 1121100222000.

The previous prime is 1121100221971. The next prime is 1121100222013. The reversal of 1121100222001 is 1002220011211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1105736371600 + 15363850401 = 1051540^2 + 123951^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121100222001 - 2⁷ = 1121100221873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121100222031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560550111000 + 560550111001.

It is an arithmetic number, because the mean of its divisors is an integer number (560550111001).

Almost surely, 2^{1121100222001} is an apocalyptic number.

It is an amenable number.

1121100222001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121100222001 is an equidigital number, since it uses as much as digits as its factorization.

1121100222001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1121100222001 its reverse (1002220011211), we get a palindrome (2123320233212).

The spelling of 1121100222001 in words is "one trillion, one hundred twenty-one billion, one hundred million, two hundred twenty-two thousand, one".