20212120012003 has 2 divisors, whose sum is σ = 20212120012004. Its totient is φ = 20212120012002.

The previous prime is 20212120011977. The next prime is 20212120012069. The reversal of 20212120012003 is 30021002121202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212120012003 - 2³³ = 20203530077411 is a prime.

It is a super-2 number, since 2×20212120012003² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20212120042003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106060006001 + 10106060006002.

It is an arithmetic number, because the mean of its divisors is an integer number (10106060006002).

Almost surely, 2^{20212120012003} is an apocalyptic number.

20212120012003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212120012003 is an equidigital number, since it uses as much as digits as its factorization.

20212120012003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20212120012003 its reverse (30021002121202), we get a palindrome (50233122133205).

The spelling of 20212120012003 in words is "twenty trillion, two hundred twelve billion, one hundred twenty million, twelve thousand, three".