1423122011555 has 4 divisors (see below), whose sum is σ = 1707746413872. Its totient is φ = 1138497609240.

The previous prime is 1423122011537. The next prime is 1423122011573. The reversal of 1423122011555 is 5551102213241.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1423122011537) and next prime (1423122011573).

It is not a de Polignac number, because 1423122011555 - 2²⁰ = 1423120962979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142312201151 + ... + 142312201160.

It is an arithmetic number, because the mean of its divisors is an integer number (426936603468).

Almost surely, 2^{1423122011555} is an apocalyptic number.

1423122011555 is a deficient number, since it is larger than the sum of its proper divisors (284624402317).

1423122011555 is an equidigital number, since it uses as much as digits as its factorization.

1423122011555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284624402316.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 1423122011555 its reverse (5551102213241), we get a palindrome (6974224224796).

The spelling of 1423122011555 in words is "one trillion, four hundred twenty-three billion, one hundred twenty-two million, eleven thousand, five hundred fifty-five".