1011220011953 has 2 divisors, whose sum is σ = 1011220011954. Its totient is φ = 1011220011952.

The previous prime is 1011220011917. The next prime is 1011220012013. The reversal of 1011220011953 is 3591100221101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 957612944929 + 53607067024 = 978577^2 + 231532^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011220011953 - 2²⁴ = 1011203234737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011220011353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505610005976 + 505610005977.

It is an arithmetic number, because the mean of its divisors is an integer number (505610005977).

Almost surely, 2^{1011220011953} is an apocalyptic number.

It is an amenable number.

1011220011953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011220011953 is an equidigital number, since it uses as much as digits as its factorization.

1011220011953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 26.

The spelling of 1011220011953 in words is "one trillion, eleven billion, two hundred twenty million, eleven thousand, nine hundred fifty-three".