1201102101 has 48 divisors (see below), whose sum is σ = 1868106240. Its totient is φ = 770621040.

The previous prime is 1201102057. The next prime is 1201102109. The reversal of 1201102101 is 1012011021.

It is a happy number.

It is not a de Polignac number, because 1201102101 - 2¹⁵ = 1201069333 is a prime.

It is a super-2 number, since 2×1201102101² = 2885292514053228402, 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 (1201102109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 741070 + ... + 742688.

It is an arithmetic number, because the mean of its divisors is an integer number (38918880).

Almost surely, 2^1201102101 is an apocalyptic number.

It is an amenable number.

1201102101 is a deficient number, since it is larger than the sum of its proper divisors (667004139).

1201102101 is an equidigital number, since it uses as much as digits as its factorization.

1201102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748 (or 1736 counting only the distinct ones).

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

The square root of 1201102101 is about 34656.9199583575. The cubic root of 1201102101 is about 1062.9837910486.

Adding to 1201102101 its reverse (1012011021), we get a palindrome (2213113122).

The spelling of 1201102101 in words is "one billion, two hundred one million, one hundred two thousand, one hundred one".