1001330121 has 32 divisors (see below), whose sum is σ = 1495802880. Its totient is φ = 590587200.

The previous prime is 1001330119. The next prime is 1001330171. The reversal of 1001330121 is 1210331001.

It is not a de Polignac number, because 1001330121 - 2¹ = 1001330119 is a prime.

It is a super-2 number, since 2×1001330121² = 2005324022443749282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001330097 and 1001330106.

It is not an unprimeable number, because it can be changed into a prime (1001330171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 440175 + ... + 442443.

It is an arithmetic number, because the mean of its divisors is an integer number (46743840).

Almost surely, 2^1001330121 is an apocalyptic number.

1001330121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001330121 is a deficient number, since it is larger than the sum of its proper divisors (494472759).

1001330121 is a wasteful number, since it uses less digits than its factorization.

1001330121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1001330121 is about 31643.8006724856. The cubic root of 1001330121 is about 1000.4431772316.

Adding to 1001330121 its reverse (1210331001), we get a palindrome (2211661122).

The spelling of 1001330121 in words is "one billion, one million, three hundred thirty thousand, one hundred twenty-one".