1001211994 has 8 divisors (see below), whose sum is σ = 1502278848. Its totient is φ = 500452380.

The previous prime is 1001211989. The next prime is 1001212013. The reversal of 1001211994 is 4991121001.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68482 + ... + 81805.

It is an arithmetic number, because the mean of its divisors is an integer number (187784856).

Almost surely, 2^1001211994 is an apocalyptic number.

1001211994 is a deficient number, since it is larger than the sum of its proper divisors (501066854).

1001211994 is a wasteful number, since it uses less digits than its factorization.

1001211994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153620.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1001211994 is about 31641.9341064986. The cubic root of 1001211994 is about 1000.4038348954.

Adding to 1001211994 its reverse (4991121001), we get a palindrome (5992332995).

The spelling of 1001211994 in words is "one billion, one million, two hundred eleven thousand, nine hundred ninety-four".