1201201101 has 12 divisors (see below), whose sum is σ = 1744154880. Its totient is φ = 796606920.

The previous prime is 1201201093. The next prime is 1201201121. The reversal of 1201201101 is 1011021021.

It is a happy number.

It is not a de Polignac number, because 1201201101 - 2³ = 1201201093 is a prime.

It is a super-2 number, since 2×1201201101² = 2885768170087224402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201201121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347671 + ... + 351108.

It is an arithmetic number, because the mean of its divisors is an integer number (145346240).

Almost surely, 2^1201201101 is an apocalyptic number.

It is an amenable number.

1201201101 is a deficient number, since it is larger than the sum of its proper divisors (542953779).

1201201101 is a wasteful number, since it uses less digits than its factorization.

1201201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698976 (or 698973 counting only the distinct ones).

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

The square root of 1201201101 is about 34658.3482151126. The cubic root of 1201201101 is about 1063.0129954779.

Adding to 1201201101 its reverse (1011021021), we get a palindrome (2212222122).

The spelling of 1201201101 in words is "one billion, two hundred one million, two hundred one thousand, one hundred one".