212021202403 has 2 divisors, whose sum is σ = 212021202404. Its totient is φ = 212021202402.

The previous prime is 212021202353. The next prime is 212021202413. The reversal of 212021202403 is 304202120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021202403 - 2¹⁷ = 212021071331 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021202413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010601201 + 106010601202.

It is an arithmetic number, because the mean of its divisors is an integer number (106010601202).

Almost surely, 2^212021202403 is an apocalyptic number.

212021202403 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021202403 is an equidigital number, since it uses as much as digits as its factorization.

212021202403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 212021202403 its reverse (304202120212), we get a palindrome (516223322615).

The spelling of 212021202403 in words is "two hundred twelve billion, twenty-one million, two hundred two thousand, four hundred three".