1020210021079 has 2 divisors, whose sum is σ = 1020210021080. Its totient is φ = 1020210021078.

The previous prime is 1020210021059. The next prime is 1020210021101. The reversal of 1020210021079 is 9701200120201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020210021079 is a prime.

It is a super-2 number, since 2×1020210021079² (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 (1020210021059) 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, 510105010539 + 510105010540.

It is an arithmetic number, because the mean of its divisors is an integer number (510105010540).

Almost surely, 2^{1020210021079} is an apocalyptic number.

1020210021079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020210021079 is an equidigital number, since it uses as much as digits as its factorization.

1020210021079 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 25.

The spelling of 1020210021079 in words is "one trillion, twenty billion, two hundred ten million, twenty-one thousand, seventy-nine".