1020011001111 has 24 divisors (see below), whose sum is σ = 1549572425856. Its totient is φ = 645655158720.

The previous prime is 1020011001103. The next prime is 1020011001151. The reversal of 1020011001111 is 1111001100201.

It is not a de Polignac number, because 1020011001111 - 2³ = 1020011001103 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 = 1020011001093 and 1020011001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020011001101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34475340 + ... + 34504913.

It is an arithmetic number, because the mean of its divisors is an integer number (64565517744).

Almost surely, 2^{1020011001111} is an apocalyptic number.

1020011001111 is a deficient number, since it is larger than the sum of its proper divisors (529561424745).

1020011001111 is a wasteful number, since it uses less digits than its factorization.

1020011001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68980343 (or 68980340 counting only the distinct ones).

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

Adding to 1020011001111 its reverse (1111001100201), we get a palindrome (2131012101312).

The spelling of 1020011001111 in words is "one trillion, twenty billion, eleven million, one thousand, one hundred eleven".