20401122403 has 2 divisors, whose sum is σ = 20401122404. Its totient is φ = 20401122402.

The previous prime is 20401122341. The next prime is 20401122407. The reversal of 20401122403 is 30422110402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20401122403 - 2²⁵ = 20367567971 is a prime.

It is not a weakly prime, because it can be changed into another prime (20401122407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200561201 + 10200561202.

It is an arithmetic number, because the mean of its divisors is an integer number (10200561202).

Almost surely, 2^20401122403 is an apocalyptic number.

20401122403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401122403 is an equidigital number, since it uses as much as digits as its factorization.

20401122403 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20401122403 its reverse (30422110402), we get a palindrome (50823232805).

The spelling of 20401122403 in words is "twenty billion, four hundred one million, one hundred twenty-two thousand, four hundred three".