1001211100993 has 8 divisors (see below), whose sum is σ = 1005231932712. Its totient is φ = 997193193216.

The previous prime is 1001211100987. The next prime is 1001211101003. The reversal of 1001211100993 is 3990011121001.

It can be written as a sum of positive squares in 4 ways, for example, as 9689055489 + 991522045504 = 98433^2 + 995752^2 .

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 1001211100993 - 2⁵ = 1001211100961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001211100193) 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, 43480 + ... + 1415737.

It is an arithmetic number, because the mean of its divisors is an integer number (125653991589).

Almost surely, 2^{1001211100993} is an apocalyptic number.

It is an amenable number.

1001211100993 is a deficient number, since it is larger than the sum of its proper divisors (4020831719).

1001211100993 is a wasteful number, since it uses less digits than its factorization.

1001211100993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461971.

The product of its (nonzero) digits is 486, while the sum is 28.

Adding to 1001211100993 its reverse (3990011121001), we get a palindrome (4991222221994).

The spelling of 1001211100993 in words is "one trillion, one billion, two hundred eleven million, one hundred thousand, nine hundred ninety-three".