1201422440023 has 4 divisors (see below), whose sum is σ = 1293839550808. Its totient is φ = 1109005329240.

The previous prime is 1201422440017. The next prime is 1201422440027. The reversal of 1201422440023 is 3200442241021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201422440023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201422440023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201422440027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46208555373 + ... + 46208555398.

It is an arithmetic number, because the mean of its divisors is an integer number (323459887702).

Almost surely, 2^{1201422440023} is an apocalyptic number.

1201422440023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1201422440023 is a deficient number, since it is larger than the sum of its proper divisors (92417110785).

1201422440023 is an equidigital number, since it uses as much as digits as its factorization.

1201422440023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92417110784.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1201422440023 its reverse (3200442241021), we get a palindrome (4401864681044).

The spelling of 1201422440023 in words is "one trillion, two hundred one billion, four hundred twenty-two million, four hundred forty thousand, twenty-three".