20216126562205 has 16 divisors (see below), whose sum is σ = 27943280455680. Its totient is φ = 13753333343232.

The previous prime is 20216126562197. The next prime is 20216126562209. The reversal of 20216126562205 is 50226562161202.

It is not a de Polignac number, because 20216126562205 - 2³ = 20216126562197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20216126562209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2274025540 + ... + 2274034429.

It is an arithmetic number, because the mean of its divisors is an integer number (1746455028480).

Almost surely, 2^{20216126562205} is an apocalyptic number.

It is an amenable number.

20216126562205 is a deficient number, since it is larger than the sum of its proper divisors (7727153893475).

20216126562205 is a wasteful number, since it uses less digits than its factorization.

20216126562205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4548060108.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 20216126562205 in words is "twenty trillion, two hundred sixteen billion, one hundred twenty-six million, five hundred sixty-two thousand, two hundred five".