1201340235155 has 4 divisors (see below), whose sum is σ = 1441608282192. Its totient is φ = 961072188120.

The previous prime is 1201340235149. The next prime is 1201340235163. The reversal of 1201340235155 is 5515320431021.

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

It is not a de Polignac number, because 1201340235155 - 2⁶ = 1201340235091 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, 120134023511 + ... + 120134023520.

It is an arithmetic number, because the mean of its divisors is an integer number (360402070548).

Almost surely, 2^{1201340235155} is an apocalyptic number.

1201340235155 is a deficient number, since it is larger than the sum of its proper divisors (240268047037).

1201340235155 is an equidigital number, since it uses as much as digits as its factorization.

1201340235155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240268047036.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 1201340235155 its reverse (5515320431021), we get a palindrome (6716660666176).

The spelling of 1201340235155 in words is "one trillion, two hundred one billion, three hundred forty million, two hundred thirty-five thousand, one hundred fifty-five".