20211212003 has 2 divisors, whose sum is σ = 20211212004. Its totient is φ = 20211212002.

The previous prime is 20211211997. The next prime is 20211212023. The reversal of 20211212003 is 30021211202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211212003 - 2⁶ = 20211211939 is a prime.

It is a super-2 number, since 2×20211212003² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20211212023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105606001 + 10105606002.

It is an arithmetic number, because the mean of its divisors is an integer number (10105606002).

Almost surely, 2^20211212003 is an apocalyptic number.

20211212003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211212003 is an equidigital number, since it uses as much as digits as its factorization.

20211212003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20211212003 its reverse (30021211202), we get a palindrome (50232423205).

The spelling of 20211212003 in words is "twenty billion, two hundred eleven million, two hundred twelve thousand, three".