20101002169 has 2 divisors, whose sum is σ = 20101002170. Its totient is φ = 20101002168.

The previous prime is 20101002157. The next prime is 20101002209. The reversal of 20101002169 is 96120010102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18144090000 + 1956912169 = 134700^2 + 44237^2 .

It is a cyclic number.

It is not a de Polignac number, because 20101002169 - 2¹⁵ = 20100969401 is a prime.

It is a super-2 number, since 2×20101002169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20101002269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050501084 + 10050501085.

It is an arithmetic number, because the mean of its divisors is an integer number (10050501085).

Almost surely, 2^20101002169 is an apocalyptic number.

It is an amenable number.

20101002169 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101002169 is an equidigital number, since it uses as much as digits as its factorization.

20101002169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 20101002169 in words is "twenty billion, one hundred one million, two thousand, one hundred sixty-nine".