20220021201021 has 48 divisors (see below), whose sum is σ = 29316223759104. Its totient is φ = 12388213490688.

The previous prime is 20220021200969. The next prime is 20220021201109. The reversal of 20220021201021 is 12010212002202.

It is not a de Polignac number, because 20220021201021 - 2⁴³ = 11423928178813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220021201221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3994105 + ... + 7509521.

It is an arithmetic number, because the mean of its divisors is an integer number (610754661648).

Almost surely, 2^{20220021201021} is an apocalyptic number.

It is an amenable number.

20220021201021 is a deficient number, since it is larger than the sum of its proper divisors (9096202558083).

20220021201021 is a wasteful number, since it uses less digits than its factorization.

20220021201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3515618 (or 3515599 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20220021201021 its reverse (12010212002202), we get a palindrome (32230233203223).

The spelling of 20220021201021 in words is "twenty trillion, two hundred twenty billion, twenty-one million, two hundred one thousand, twenty-one".