1101623171021 has 2 divisors, whose sum is σ = 1101623171022. Its totient is φ = 1101623171020.

The previous prime is 1101623170987. The next prime is 1101623171041. The reversal of 1101623171021 is 1201713261011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 952019761225 + 149603409796 = 975715^2 + 386786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101623171021 is a prime.

It is a super-2 number, since 2×1101623171021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101623171041) 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, 550811585510 + 550811585511.

It is an arithmetic number, because the mean of its divisors is an integer number (550811585511).

Almost surely, 2^{1101623171021} is an apocalyptic number.

It is an amenable number.

1101623171021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101623171021 is an equidigital number, since it uses as much as digits as its factorization.

1101623171021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 1101623171021 in words is "one trillion, one hundred one billion, six hundred twenty-three million, one hundred seventy-one thousand, twenty-one".