20220331021 has 16 divisors (see below), whose sum is σ = 23639718528. Its totient is φ = 17107675200.

The previous prime is 20220331013. The next prime is 20220331091. The reversal of 20220331021 is 12013302202.

It is not a de Polignac number, because 20220331021 - 2³ = 20220331013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220330986 and 20220331004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220331091) 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, 1070670 + ... + 1089391.

It is an arithmetic number, because the mean of its divisors is an integer number (1477482408).

Almost surely, 2^20220331021 is an apocalyptic number.

It is an amenable number.

20220331021 is a deficient number, since it is larger than the sum of its proper divisors (3419387507).

20220331021 is a wasteful number, since it uses less digits than its factorization.

20220331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160132.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20220331021 its reverse (12013302202), we get a palindrome (32233633223).

The spelling of 20220331021 in words is "twenty billion, two hundred twenty million, three hundred thirty-one thousand, twenty-one".