20120321122403 has 2 divisors, whose sum is σ = 20120321122404. Its totient is φ = 20120321122402.

The previous prime is 20120321122373. The next prime is 20120321122483. The reversal of 20120321122403 is 30422112302102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20120321122403 - 2¹⁴ = 20120321106019 is a prime.

It is not a weakly prime, because it can be changed into another prime (20120321122483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060160561201 + 10060160561202.

It is an arithmetic number, because the mean of its divisors is an integer number (10060160561202).

Almost surely, 2^{20120321122403} is an apocalyptic number.

20120321122403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120321122403 is an equidigital number, since it uses as much as digits as its factorization.

20120321122403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20120321122403 its reverse (30422112302102), we get a palindrome (50542433424505).

The spelling of 20120321122403 in words is "twenty trillion, one hundred twenty billion, three hundred twenty-one million, one hundred twenty-two thousand, four hundred three".