1023001021111 has 8 divisors (see below), whose sum is σ = 1023794929584. Its totient is φ = 1022207223360.

The previous prime is 1023001021099. The next prime is 1023001021117. The reversal of 1023001021111 is 1111201003201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1023001021111 - 2⁷ = 1023001020983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023001021091 and 1023001021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023001021117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33880441 + ... + 33910621.

It is an arithmetic number, because the mean of its divisors is an integer number (127974366198).

Almost surely, 2^{1023001021111} is an apocalyptic number.

1023001021111 is a deficient number, since it is larger than the sum of its proper divisors (793908473).

1023001021111 is a wasteful number, since it uses less digits than its factorization.

1023001021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55361.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1023001021111 its reverse (1111201003201), we get a palindrome (2134202024312).

The spelling of 1023001021111 in words is "one trillion, twenty-three billion, one million, twenty-one thousand, one hundred eleven".