1111317272621 has 2 divisors, whose sum is σ = 1111317272622. Its totient is φ = 1111317272620.

The previous prime is 1111317272617. The next prime is 1111317272633. The reversal of 1111317272621 is 1262727131111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1110254186596 + 1063086025 = 1053686^2 + 32605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111317272621 - 2² = 1111317272617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111317272651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555658636310 + 555658636311.

It is an arithmetic number, because the mean of its divisors is an integer number (555658636311).

Almost surely, 2^{1111317272621} is an apocalyptic number.

It is an amenable number.

1111317272621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111317272621 is an equidigital number, since it uses as much as digits as its factorization.

1111317272621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 35.

The spelling of 1111317272621 in words is "one trillion, one hundred eleven billion, three hundred seventeen million, two hundred seventy-two thousand, six hundred twenty-one".