20212012011 has 16 divisors (see below), whose sum is σ = 28878401664. Its totient is φ = 12529248384.

The previous prime is 20212012003. The next prime is 20212012049. The reversal of 20212012011 is 11021021202.

It is not a de Polignac number, because 20212012011 - 2³ = 20212012003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212012061) 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, 2383201 + ... + 2391666.

It is an arithmetic number, because the mean of its divisors is an integer number (1804900104).

Almost surely, 2^20212012011 is an apocalyptic number.

20212012011 is a deficient number, since it is larger than the sum of its proper divisors (8666389653).

20212012011 is a wasteful number, since it uses less digits than its factorization.

20212012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4774970.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20212012011 its reverse (11021021202), we get a palindrome (31233033213).

The spelling of 20212012011 in words is "twenty billion, two hundred twelve million, twelve thousand, eleven".