1201001611 has 16 divisors (see below), whose sum is σ = 1258198240. Its totient is φ = 1145249280.

The previous prime is 1201001591. The next prime is 1201001623. The reversal of 1201001611 is 1161001021.

It is a cyclic number.

It is not a de Polignac number, because 1201001611 - 2⁵ = 1201001579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201001591 and 1201001600.

It is not an unprimeable number, because it can be changed into a prime (1201001651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 759820 + ... + 761398.

It is an arithmetic number, because the mean of its divisors is an integer number (78637390).

Almost surely, 2^1201001611 is an apocalyptic number.

1201001611 is a deficient number, since it is larger than the sum of its proper divisors (57196629).

1201001611 is a wasteful number, since it uses less digits than its factorization.

1201001611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1201001611 is about 34655.4701454186. The cubic root of 1201001611 is about 1062.9541454367.

Adding to 1201001611 its reverse (1161001021), we get a palindrome (2362002632).

The spelling of 1201001611 in words is "one billion, two hundred one million, one thousand, six hundred eleven".