1002210021077 has 2 divisors, whose sum is σ = 1002210021078. Its totient is φ = 1002210021076.

The previous prime is 1002210021023. The next prime is 1002210021139. The reversal of 1002210021077 is 7701200122001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 618313296241 + 383896724836 = 786329^2 + 619594^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002210021077 - 2³² = 997915053781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002210021877) 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, 501105010538 + 501105010539.

It is an arithmetic number, because the mean of its divisors is an integer number (501105010539).

Almost surely, 2^{1002210021077} is an apocalyptic number.

It is an amenable number.

1002210021077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002210021077 is an equidigital number, since it uses as much as digits as its factorization.

1002210021077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

Adding to 1002210021077 its reverse (7701200122001), we get a palindrome (8703410143078).

The spelling of 1002210021077 in words is "one trillion, two billion, two hundred ten million, twenty-one thousand, seventy-seven".