10021053421 has 8 divisors (see below), whose sum is σ = 10103205024. Its totient is φ = 9938987760.

The previous prime is 10021053401. The next prime is 10021053431. The reversal of 10021053421 is 12435012001.

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 10021053421 - 2²³ = 10012664813 is a prime.

It is a super-5 number, since 5×10021053421⁵ (a number of 51 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021053401) 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, 224091 + ... + 265063.

It is an arithmetic number, because the mean of its divisors is an integer number (1262900628).

Almost surely, 2^10021053421 is an apocalyptic number.

It is an amenable number.

10021053421 is a deficient number, since it is larger than the sum of its proper divisors (82151603).

10021053421 is a wasteful number, since it uses less digits than its factorization.

10021053421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42971.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 10021053421 its reverse (12435012001), we get a palindrome (22456065422).

The spelling of 10021053421 in words is "ten billion, twenty-one million, fifty-three thousand, four hundred twenty-one".