20120122655803 has 2 divisors, whose sum is σ = 20120122655804. Its totient is φ = 20120122655802.

The previous prime is 20120122655797. The next prime is 20120122655813. The reversal of 20120122655803 is 30855622102102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20120122655803 - 2⁹ = 20120122655291 is a prime.

It is not a weakly prime, because it can be changed into another prime (20120122655813) 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, 10060061327901 + 10060061327902.

It is an arithmetic number, because the mean of its divisors is an integer number (10060061327902).

Almost surely, 2^{20120122655803} is an apocalyptic number.

20120122655803 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120122655803 is an equidigital number, since it uses as much as digits as its factorization.

20120122655803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 20120122655803 its reverse (30855622102102), we get a palindrome (50975744757905).

The spelling of 20120122655803 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-two million, six hundred fifty-five thousand, eight hundred three".