10021022021 has 16 divisors (see below), whose sum is σ = 10348248768. Its totient is φ = 9696931200.

The previous prime is 10021022003. The next prime is 10021022023. The reversal of 10021022021 is 12022012001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10021022021 - 2⁶ = 10021021957 is a prime.

It is a super-4 number, since 4×10021022021⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021021993 and 10021022011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021022023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6992321 + ... + 6993753.

It is an arithmetic number, because the mean of its divisors is an integer number (646765548).

Almost surely, 2^10021022021 is an apocalyptic number.

It is an amenable number.

10021022021 is a deficient number, since it is larger than the sum of its proper divisors (327226747).

10021022021 is a wasteful number, since it uses less digits than its factorization.

10021022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10021022021 its reverse (12022012001), we get a palindrome (22043034022).

The spelling of 10021022021 in words is "ten billion, twenty-one million, twenty-two thousand, twenty-one".