1021132221971 has 2 divisors, whose sum is σ = 1021132221972. Its totient is φ = 1021132221970.

The previous prime is 1021132221929. The next prime is 1021132222043. The reversal of 1021132221971 is 1791222311201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021132221971 is a prime.

It is a super-2 number, since 2×1021132221971² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1021132221371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510566110985 + 510566110986.

It is an arithmetic number, because the mean of its divisors is an integer number (510566110986).

Almost surely, 2^{1021132221971} is an apocalyptic number.

1021132221971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021132221971 is an equidigital number, since it uses as much as digits as its factorization.

1021132221971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 1021132221971 in words is "one trillion, twenty-one billion, one hundred thirty-two million, two hundred twenty-one thousand, nine hundred seventy-one".