1177190402021 has 2 divisors, whose sum is σ = 1177190402022. Its totient is φ = 1177190402020.

The previous prime is 1177190401999. The next prime is 1177190402023. The reversal of 1177190402021 is 1202040917711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 633894630625 + 543295771396 = 796175^2 + 737086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1177190402021 is a prime.

It is a super-2 number, since 2×1177190402021² (a number of 25 digits) contains 22 as substring.

Together with 1177190402023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1177190402023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 588595201010 + 588595201011.

It is an arithmetic number, because the mean of its divisors is an integer number (588595201011).

Almost surely, 2^{1177190402021} is an apocalyptic number.

It is an amenable number.

1177190402021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1177190402021 is an equidigital number, since it uses as much as digits as its factorization.

1177190402021 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 1177190402021 in words is "one trillion, one hundred seventy-seven billion, one hundred ninety million, four hundred two thousand, twenty-one".