1021001110023 has 16 divisors (see below), whose sum is σ = 1396210914560. Its totient is φ = 663302473344.

The previous prime is 1021001109971. The next prime is 1021001110037. The reversal of 1021001110023 is 3200111001201.

It is not a de Polignac number, because 1021001110023 - 2⁸ = 1021001109767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021001109990 and 1021001110008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021001110123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9083563 + ... + 9195276.

It is an arithmetic number, because the mean of its divisors is an integer number (87263182160).

Almost surely, 2^{1021001110023} is an apocalyptic number.

1021001110023 is a deficient number, since it is larger than the sum of its proper divisors (375209804537).

1021001110023 is a wasteful number, since it uses less digits than its factorization.

1021001110023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18279318.

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

Adding to 1021001110023 its reverse (3200111001201), we get a palindrome (4221112111224).

The spelling of 1021001110023 in words is "one trillion, twenty-one billion, one million, one hundred ten thousand, twenty-three".