1001120211 has 48 divisors (see below), whose sum is σ = 1827926464. Its totient is φ = 513775872.

The previous prime is 1001120207. The next prime is 1001120213. The reversal of 1001120211 is 1120211001.

It is a happy number.

It is not a de Polignac number, because 1001120211 - 2² = 1001120207 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1001120193 and 1001120202.

It is not an unprimeable number, because it can be changed into a prime (1001120213) 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 47 ways as a sum of consecutive naturals, for example, 13785 + ... + 46821.

Almost surely, 2^1001120211 is an apocalyptic number.

1001120211 is a deficient number, since it is larger than the sum of its proper divisors (826806253).

1001120211 is a wasteful number, since it uses less digits than its factorization.

1001120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33100 (or 33097 counting only the distinct ones).

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

The square root of 1001120211 is about 31640.4837352402. The cubic root of 1001120211 is about 1000.3732643231.

Adding to 1001120211 its reverse (1120211001), we get a palindrome (2121331212).

The spelling of 1001120211 in words is "one billion, one million, one hundred twenty thousand, two hundred eleven".