20225666211 has 8 divisors (see below), whose sum is σ = 26974821120. Its totient is φ = 13480144392.

The previous prime is 20225666183. The next prime is 20225666297. The reversal of 20225666211 is 11266652202.

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

It is not a de Polignac number, because 20225666211 - 2²³ = 20217277603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20225666311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895255 + ... + 917568.

It is an arithmetic number, because the mean of its divisors is an integer number (3371852640).

Almost surely, 2^20225666211 is an apocalyptic number.

20225666211 is a deficient number, since it is larger than the sum of its proper divisors (6749154909).

20225666211 is a wasteful number, since it uses less digits than its factorization.

20225666211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816545.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 20225666211 in words is "twenty billion, two hundred twenty-five million, six hundred sixty-six thousand, two hundred eleven".