202200212121989 has 2 divisors, whose sum is σ = 202200212121990. Its totient is φ = 202200212121988.

The previous prime is 202200212121979. The next prime is 202200212122033. The reversal of 202200212121989 is 989121212002202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201142313476225 + 1057898645764 = 14182465^2 + 1028542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202200212121989 is a prime.

It is a super-2 number, since 2×202200212121989² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202200212121979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101100106060994 + 101100106060995.

It is an arithmetic number, because the mean of its divisors is an integer number (101100106060995).

Almost surely, 2^{202200212121989} is an apocalyptic number.

It is an amenable number.

202200212121989 is a deficient number, since it is larger than the sum of its proper divisors (1).

202200212121989 is an equidigital number, since it uses as much as digits as its factorization.

202200212121989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 202200212121989 in words is "two hundred two trillion, two hundred billion, two hundred twelve million, one hundred twenty-one thousand, nine hundred eighty-nine".