20212120012011 has 24 divisors (see below), whose sum is σ = 27289359311760. Its totient is φ = 13306904552256.

The previous prime is 20212120012003. The next prime is 20212120012069. The reversal of 20212120012011 is 11021002121202.

It is not a de Polignac number, because 20212120012011 - 2³ = 20212120012003 is a prime.

It is a super-3 number, since 3×20212120012011³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20212120014011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50164825 + ... + 50566133.

It is an arithmetic number, because the mean of its divisors is an integer number (1137056637990).

Almost surely, 2^{20212120012011} is an apocalyptic number.

20212120012011 is a deficient number, since it is larger than the sum of its proper divisors (7077239299749).

20212120012011 is an equidigital number, since it uses as much as digits as its factorization.

20212120012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403915 (or 403832 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20212120012011 its reverse (11021002121202), we get a palindrome (31233122133213).

The spelling of 20212120012011 in words is "twenty trillion, two hundred twelve billion, one hundred twenty million, twelve thousand, eleven".