20065211 has 8 divisors (see below), whose sum is σ = 20706960. Its totient is φ = 19428768.

The previous prime is 20065207. The next prime is 20065229. The reversal of 20065211 is 11256002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20065211 - 2² = 20065207 is a prime.

It is a super-2 number, since 2×20065211² = 805225384949042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20065211.

It is not an unprimeable number, because it can be changed into a prime (20065231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7205 + ... + 9593.

It is an arithmetic number, because the mean of its divisors is an integer number (2588370).

Almost surely, 2^20065211 is an apocalyptic number.

20065211 is a deficient number, since it is larger than the sum of its proper divisors (641749).

20065211 is a wasteful number, since it uses less digits than its factorization.

20065211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20065211 is about 4479.4208330989. The cubic root of 20065211 is about 271.7364580790.

The spelling of 20065211 in words is "twenty million, sixty-five thousand, two hundred eleven".