20221022120021 has 32 divisors (see below), whose sum is σ = 21928804724736. Its totient is φ = 18576280800000.

The previous prime is 20221022119993. The next prime is 20221022120069. The reversal of 20221022120021 is 12002122012202.

It is a happy number.

It is not a de Polignac number, because 20221022120021 - 2¹⁴ = 20221022103637 is a prime.

It is a super-3 number, since 3×20221022120021³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221022120821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503604296 + ... + 503644446.

It is an arithmetic number, because the mean of its divisors is an integer number (685275147648).

Almost surely, 2^{20221022120021} is an apocalyptic number.

It is an amenable number.

20221022120021 is a deficient number, since it is larger than the sum of its proper divisors (1707782604715).

20221022120021 is a wasteful number, since it uses less digits than its factorization.

20221022120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44393.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20221022120021 its reverse (12002122012202), we get a palindrome (32223144132223).

The spelling of 20221022120021 in words is "twenty trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty thousand, twenty-one".