1201332121 has 12 divisors (see below), whose sum is σ = 1323045360. Its totient is φ = 1081799960.

The previous prime is 1201332107. The next prime is 1201332137. The reversal of 1201332121 is 1212331021.

It is not a de Polignac number, because 1201332121 - 2⁵ = 1201332089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201332095 and 1201332104.

It is not an unprimeable number, because it can be changed into a prime (1201332101) 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, 121170 + ... + 130708.

It is an arithmetic number, because the mean of its divisors is an integer number (110253780).

Almost surely, 2^1201332121 is an apocalyptic number.

1201332121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201332121 is a deficient number, since it is larger than the sum of its proper divisors (121713239).

1201332121 is an equidigital number, since it uses as much as digits as its factorization.

1201332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9764 (or 9657 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1201332121 is about 34660.2383286670. The cubic root of 1201332121 is about 1063.0516431556.

Adding to 1201332121 its reverse (1212331021), we get a palindrome (2413663142).

The spelling of 1201332121 in words is "one billion, two hundred one million, three hundred thirty-two thousand, one hundred twenty-one".