101222420989 has 2 divisors, whose sum is σ = 101222420990. Its totient is φ = 101222420988.

The previous prime is 101222420987. The next prime is 101222421161. The reversal of 101222420989 is 989024222101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90622071225 + 10600349764 = 301035^2 + 102958^2 .

It is a cyclic number.

It is not a de Polignac number, because 101222420989 - 2¹ = 101222420987 is a prime.

Together with 101222420987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101222420987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611210494 + 50611210495.

It is an arithmetic number, because the mean of its divisors is an integer number (50611210495).

Almost surely, 2^101222420989 is an apocalyptic number.

It is an amenable number.

101222420989 is a deficient number, since it is larger than the sum of its proper divisors (1).

101222420989 is an equidigital number, since it uses as much as digits as its factorization.

101222420989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 101222420989 in words is "one hundred one billion, two hundred twenty-two million, four hundred twenty thousand, nine hundred eighty-nine".