100021212000977 has 2 divisors, whose sum is σ = 100021212000978. Its totient is φ = 100021212000976.

The previous prime is 100021212000973. The next prime is 100021212001019. The reversal of 100021212000977 is 779000212120001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94061212602256 + 5959999398721 = 9698516^2 + 2441311^2 .

It is a cyclic number.

It is not a de Polignac number, because 100021212000977 - 2² = 100021212000973 is a prime.

It is not a weakly prime, because it can be changed into another prime (100021212000973) 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, 50010606000488 + 50010606000489.

It is an arithmetic number, because the mean of its divisors is an integer number (50010606000489).

Almost surely, 2^{100021212000977} is an apocalyptic number.

It is an amenable number.

100021212000977 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021212000977 is an equidigital number, since it uses as much as digits as its factorization.

100021212000977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 32.

Adding to 100021212000977 its reverse (779000212120001), we get a palindrome (879021424120978).

The spelling of 100021212000977 in words is "one hundred trillion, twenty-one billion, two hundred twelve million, nine hundred seventy-seven", and thus it is an aban number.