1201355355 has 16 divisors (see below), whose sum is σ = 1922637600. Its totient is φ = 640566528.

The previous prime is 1201355347. The next prime is 1201355383. The reversal of 1201355355 is 5535531021.

It is not a de Polignac number, because 1201355355 - 2³ = 1201355347 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80889 + ... + 94581.

It is an arithmetic number, because the mean of its divisors is an integer number (120164850).

Almost surely, 2^1201355355 is an apocalyptic number.

1201355355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1201355355 is a deficient number, since it is larger than the sum of its proper divisors (721282245).

1201355355 is a wasteful number, since it uses less digits than its factorization.

1201355355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19550.

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 1201355355 is about 34660.5734949669. The cubic root of 1201355355 is about 1063.0584963209.

Adding to 1201355355 its reverse (5535531021), we get a palindrome (6736886376).

The spelling of 1201355355 in words is "one billion, two hundred one million, three hundred fifty-five thousand, three hundred fifty-five".