1021110001011 has 24 divisors (see below), whose sum is σ = 1481713640784. Its totient is φ = 677618726400.

The previous prime is 1021110000997. The next prime is 1021110001129. The reversal of 1021110001011 is 1101000111201.

It is not a de Polignac number, because 1021110001011 - 2⁵ = 1021110000979 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 = 1021110000984 and 1021110001002.

It is not an unprimeable number, because it can be changed into a prime (1021110051011) 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, 1598536 + ... + 2144186.

It is an arithmetic number, because the mean of its divisors is an integer number (61738068366).

Almost surely, 2^{1021110001011} is an apocalyptic number.

1021110001011 is a deficient number, since it is larger than the sum of its proper divisors (460603639773).

1021110001011 is a wasteful number, since it uses less digits than its factorization.

1021110001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546611 (or 546608 counting only the distinct ones).

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

Adding to 1021110001011 its reverse (1101000111201), we get a palindrome (2122110112212).

The spelling of 1021110001011 in words is "one trillion, twenty-one billion, one hundred ten million, one thousand, eleven".