20213642203 has 2 divisors, whose sum is σ = 20213642204. Its totient is φ = 20213642202.

The previous prime is 20213642201. The next prime is 20213642249. The reversal of 20213642203 is 30224631202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20213642203 - 2¹ = 20213642201 is a prime.

It is a super-2 number, since 2×20213642203² (a number of 21 digits) contains 22 as substring.

Together with 20213642201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20213642201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106821101 + 10106821102.

It is an arithmetic number, because the mean of its divisors is an integer number (10106821102).

Almost surely, 2^20213642203 is an apocalyptic number.

20213642203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213642203 is an equidigital number, since it uses as much as digits as its factorization.

20213642203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The spelling of 20213642203 in words is "twenty billion, two hundred thirteen million, six hundred forty-two thousand, two hundred three".