20110212205 has 16 divisors (see below), whose sum is σ = 24314419584. Its totient is φ = 15967005120.

The previous prime is 20110212191. The next prime is 20110212211. The reversal of 20110212205 is 50221201102.

It is a happy number.

It is not a de Polignac number, because 20110212205 - 2⁷ = 20110212077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575535 + ... + 609475.

It is an arithmetic number, because the mean of its divisors is an integer number (1519651224).

Almost surely, 2^20110212205 is an apocalyptic number.

It is an amenable number.

20110212205 is a deficient number, since it is larger than the sum of its proper divisors (4204207379).

20110212205 is a wasteful number, since it uses less digits than its factorization.

20110212205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34836.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 20110212205 its reverse (50221201102), we get a palindrome (70331413307).

The spelling of 20110212205 in words is "twenty billion, one hundred ten million, two hundred twelve thousand, two hundred five".