1021013001111 has 16 divisors (see below), whose sum is σ = 1392481102688. Its totient is φ = 665252265600.

The previous prime is 1021013001109. The next prime is 1021013001193. The reversal of 1021013001111 is 1111003101201.

It is not a de Polignac number, because 1021013001111 - 2¹ = 1021013001109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021013001611) 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, 17739760 + ... + 17797221.

It is an arithmetic number, because the mean of its divisors is an integer number (87030068918).

Almost surely, 2^{1021013001111} is an apocalyptic number.

1021013001111 is a deficient number, since it is larger than the sum of its proper divisors (371468101577).

1021013001111 is a wasteful number, since it uses less digits than its factorization.

1021013001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35537202.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 1021013001111 its reverse (1111003101201), we get a palindrome (2132016102312).

The spelling of 1021013001111 in words is "one trillion, twenty-one billion, thirteen million, one thousand, one hundred eleven".