1101201201 has 6 divisors (see below), whose sum is σ = 1590623970. Its totient is φ = 734134128.

The previous prime is 1101201191. The next prime is 1101201203. The reversal of 1101201201 is 1021021011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1069290000 + 31911201 = 32700^2 + 5649^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1101201201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 122355689 = 1101201201 / (1 + 1 + 0 + 1 + 2 + 0 + 1 + 2 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (1101201203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61177836 + ... + 61177853.

It is an arithmetic number, because the mean of its divisors is an integer number (265103995).

Almost surely, 2^1101201201 is an apocalyptic number.

It is an amenable number.

1101201201 is a deficient number, since it is larger than the sum of its proper divisors (489422769).

1101201201 is a wasteful number, since it uses less digits than its factorization.

1101201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122355695 (or 122355692 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1101201201 is about 33184.3517489795. The cubic root of 1101201201 is about 1032.6557290409.

Adding to 1101201201 its reverse (1021021011), we get a palindrome (2122222212).

The spelling of 1101201201 in words is "one billion, one hundred one million, two hundred one thousand, two hundred one".