1001011021023 has 8 divisors (see below), whose sum is σ = 1437349158448. Its totient is φ = 616006782144.

The previous prime is 1001011020983. The next prime is 1001011021051. The reversal of 1001011021023 is 3201201101001.

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

It is not a de Polignac number, because 1001011021023 - 2³² = 996716053727 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 (1001011022023) 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, 12833474590 + ... + 12833474667.

It is an arithmetic number, because the mean of its divisors is an integer number (179668644806).

Almost surely, 2^{1001011021023} is an apocalyptic number.

1001011021023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1001011021023 is a deficient number, since it is larger than the sum of its proper divisors (436338137425).

1001011021023 is a wasteful number, since it uses less digits than its factorization.

1001011021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25666949273.

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

Adding to 1001011021023 its reverse (3201201101001), we get a palindrome (4202212122024).

The spelling of 1001011021023 in words is "one trillion, one billion, eleven million, twenty-one thousand, twenty-three".