20220021021021 has 8 divisors (see below), whose sum is σ = 26961515058144. Its totient is φ = 13479270498960.

The previous prime is 20220021021001. The next prime is 20220021021059. The reversal of 20220021021021 is 12012012002202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20220021021021 - 2⁵ = 20220021020989 is a prime.

It is a super-2 number, since 2×20220021021021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220021021001) 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, 185815306 + ... + 185924091.

It is an arithmetic number, because the mean of its divisors is an integer number (3370189382268).

Almost surely, 2^{20220021021021} is an apocalyptic number.

It is an amenable number.

20220021021021 is a deficient number, since it is larger than the sum of its proper divisors (6741494037123).

20220021021021 is a wasteful number, since it uses less digits than its factorization.

20220021021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371757531.

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

Adding to 20220021021021 its reverse (12012012002202), we get a palindrome (32232033023223).

The spelling of 20220021021021 in words is "twenty trillion, two hundred twenty billion, twenty-one million, twenty-one thousand, twenty-one".