1001211100103 has 16 divisors (see below), whose sum is σ = 1019265286656. Its totient is φ = 983211229440.

The previous prime is 1001211100049. The next prime is 1001211100111. The reversal of 1001211100103 is 3010011121001.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001211100103 is a prime.

It is a super-2 number, since 2×1001211100103² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 114905675 + ... + 114914387.

It is an arithmetic number, because the mean of its divisors is an integer number (63704080416).

Almost surely, 2^{1001211100103} is an apocalyptic number.

1001211100103 is a deficient number, since it is larger than the sum of its proper divisors (18054186553).

1001211100103 is a wasteful number, since it uses less digits than its factorization.

1001211100103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11594.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 1001211100103 its reverse (3010011121001), we get a palindrome (4011222221104).

The spelling of 1001211100103 in words is "one trillion, one billion, two hundred eleven million, one hundred thousand, one hundred three".