20221046021 has 8 divisors (see below), whose sum is σ = 22819989600. Its totient is φ = 17748880240.

The previous prime is 20221045991. The next prime is 20221046047. The reversal of 20221046021 is 12064012202.

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 20221046021 - 2²⁶ = 20153937157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20221045984 and 20221046002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221046051) 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, 31694111 + ... + 31694748.

It is an arithmetic number, because the mean of its divisors is an integer number (2852498700).

Almost surely, 2^20221046021 is an apocalyptic number.

It is an amenable number.

20221046021 is a deficient number, since it is larger than the sum of its proper divisors (2598943579).

20221046021 is a wasteful number, since it uses less digits than its factorization.

20221046021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63388899.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20221046021 its reverse (12064012202), we get a palindrome (32285058223).

The spelling of 20221046021 in words is "twenty billion, two hundred twenty-one million, forty-six thousand, twenty-one".