1201122635 has 8 divisors (see below), whose sum is σ = 1464976176. Its totient is φ = 945145440.

The previous prime is 1201122613. The next prime is 1201122679. The reversal of 1201122635 is 5362211021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201122635 - 2¹² = 1201118539 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 1201122635.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1968749 + ... + 1969358.

It is an arithmetic number, because the mean of its divisors is an integer number (183122022).

Almost surely, 2^1201122635 is an apocalyptic number.

1201122635 is a deficient number, since it is larger than the sum of its proper divisors (263853541).

1201122635 is an equidigital number, since it uses as much as digits as its factorization.

1201122635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938173.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1201122635 is about 34657.2162038442. The cubic root of 1201122635 is about 1062.9898485921.

Adding to 1201122635 its reverse (5362211021), we get a palindrome (6563333656).

The spelling of 1201122635 in words is "one billion, two hundred one million, one hundred twenty-two thousand, six hundred thirty-five".