20212843403 has 2 divisors, whose sum is σ = 20212843404. Its totient is φ = 20212843402.

The previous prime is 20212843373. The next prime is 20212843439. The reversal of 20212843403 is 30434821202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212843403 - 2¹⁰ = 20212842379 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212843103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106421701 + 10106421702.

It is an arithmetic number, because the mean of its divisors is an integer number (10106421702).

Almost surely, 2^20212843403 is an apocalyptic number.

20212843403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212843403 is an equidigital number, since it uses as much as digits as its factorization.

20212843403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 20212843403 in words is "twenty billion, two hundred twelve million, eight hundred forty-three thousand, four hundred three".