1001210001111 has 16 divisors (see below), whose sum is σ = 1483333382400. Its totient is φ = 667446646104.

The previous prime is 1001210001107. The next prime is 1001210001137. The reversal of 1001210001111 is 1111000121001.

It is not a de Polignac number, because 1001210001111 - 2² = 1001210001107 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 = 1001210001093 and 1001210001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001210000111) 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, 41541 + ... + 1415678.

It is an arithmetic number, because the mean of its divisors is an integer number (92708336400).

Almost surely, 2^{1001210001111} is an apocalyptic number.

1001210001111 is a deficient number, since it is larger than the sum of its proper divisors (482123381289).

1001210001111 is a wasteful number, since it uses less digits than its factorization.

1001210001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482675 (or 1482669 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1001210001111 its reverse (1111000121001), we get a palindrome (2112210122112).

The spelling of 1001210001111 in words is "one trillion, one billion, two hundred ten million, one thousand, one hundred eleven".