20002210211989 has 2 divisors, whose sum is σ = 20002210211990. Its totient is φ = 20002210211988.

The previous prime is 20002210211957. The next prime is 20002210212011. The reversal of 20002210211989 is 98911201220002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15361774748100 + 4640435463889 = 3919410^2 + 2154167^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002210211989 - 2⁵ = 20002210211957 is a prime.

It is a super-2 number, since 2×20002210211989² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002210211939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001105105994 + 10001105105995.

It is an arithmetic number, because the mean of its divisors is an integer number (10001105105995).

Almost surely, 2^{20002210211989} is an apocalyptic number.

It is an amenable number.

20002210211989 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002210211989 is an equidigital number, since it uses as much as digits as its factorization.

20002210211989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 20002210211989 in words is "twenty trillion, two billion, two hundred ten million, two hundred eleven thousand, nine hundred eighty-nine".