20213122403 has 2 divisors, whose sum is σ = 20213122404. Its totient is φ = 20213122402.

The previous prime is 20213122373. The next prime is 20213122427. The reversal of 20213122403 is 30422131202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20213122403 - 2⁸ = 20213122147 is a prime.

It is not a weakly prime, because it can be changed into another prime (20213122103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106561201 + 10106561202.

It is an arithmetic number, because the mean of its divisors is an integer number (10106561202).

Almost surely, 2^20213122403 is an apocalyptic number.

20213122403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213122403 is an equidigital number, since it uses as much as digits as its factorization.

20213122403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20213122403 its reverse (30422131202), we get a palindrome (50635253605).

The spelling of 20213122403 in words is "twenty billion, two hundred thirteen million, one hundred twenty-two thousand, four hundred three".