1001020101111 has 6 divisors (see below), whose sum is σ = 1445917923840. Its totient is φ = 667346734068.

The previous prime is 1001020101049. The next prime is 1001020101149. The reversal of 1001020101111 is 1111010201001.

It is not a de Polignac number, because 1001020101111 - 2¹⁸ = 1001019838967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 111224455679 = 1001020101111 / (1 + 0 + 0 + 1 + 0 + 2 + 0 + 1 + 0 + 1 + 1 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 1001020101093 and 1001020101102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001020101161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55612227831 + ... + 55612227848.

It is an arithmetic number, because the mean of its divisors is an integer number (240986320640).

Almost surely, 2^{1001020101111} is an apocalyptic number.

1001020101111 is a deficient number, since it is larger than the sum of its proper divisors (444897822729).

1001020101111 is a wasteful number, since it uses less digits than its factorization.

1001020101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111224455685 (or 111224455682 counting only the distinct ones).

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

Adding to 1001020101111 its reverse (1111010201001), we get a palindrome (2112030302112).

The spelling of 1001020101111 in words is "one trillion, one billion, twenty million, one hundred one thousand, one hundred eleven".