1001421423021 has 8 divisors (see below), whose sum is σ = 1341216136960. Its totient is φ = 664620495552.

The previous prime is 1001421423011. The next prime is 1001421423059. The reversal of 1001421423021 is 1203241241001.

1001421423021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1001421423021 - 2²⁶ = 1001354314157 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 (1001421423011) 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, 748445836 + ... + 748447173.

It is an arithmetic number, because the mean of its divisors is an integer number (167652017120).

Almost surely, 2^{1001421423021} is an apocalyptic number.

It is an amenable number.

1001421423021 is a deficient number, since it is larger than the sum of its proper divisors (339794713939).

1001421423021 is a wasteful number, since it uses less digits than its factorization.

1001421423021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496893235.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1001421423021 its reverse (1203241241001), we get a palindrome (2204662664022).

The spelling of 1001421423021 in words is "one trillion, one billion, four hundred twenty-one million, four hundred twenty-three thousand, twenty-one".