20020212169 has 2 divisors, whose sum is σ = 20020212170. Its totient is φ = 20020212168.

The previous prime is 20020212097. The next prime is 20020212187. The reversal of 20020212169 is 96121202002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13187536569 + 6832675600 = 114837^2 + 82660^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020212169 - 2¹⁵ = 20020179401 is a prime.

It is a super-2 number, since 2×20020212169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20020212769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010106084 + 10010106085.

It is an arithmetic number, because the mean of its divisors is an integer number (10010106085).

Almost surely, 2^20020212169 is an apocalyptic number.

It is an amenable number.

20020212169 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020212169 is an equidigital number, since it uses as much as digits as its factorization.

20020212169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 20020212169 in words is "twenty billion, twenty million, two hundred twelve thousand, one hundred sixty-nine".