1001132121 has 8 divisors (see below), whose sum is σ = 1456192224. Its totient is φ = 606746720.

The previous prime is 1001132107. The next prime is 1001132131. The reversal of 1001132121 is 1212311001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001132121 - 2⁵ = 1001132089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001132097 and 1001132106.

It is not an unprimeable number, because it can be changed into a prime (1001132131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15168636 + ... + 15168701.

It is an arithmetic number, because the mean of its divisors is an integer number (182024028).

Almost surely, 2^1001132121 is an apocalyptic number.

1001132121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001132121 is a deficient number, since it is larger than the sum of its proper divisors (455060103).

1001132121 is a wasteful number, since it uses less digits than its factorization.

1001132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30337351.

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

The square root of 1001132121 is about 31640.6719429281. The cubic root of 1001132121 is about 1000.3772313453.

Adding to 1001132121 its reverse (1212311001), we get a palindrome (2213443122).

The spelling of 1001132121 in words is "one billion, one million, one hundred thirty-two thousand, one hundred twenty-one".