12122022020021 has 8 divisors (see below), whose sum is σ = 12132075731160. Its totient is φ = 12111972380928.

The previous prime is 12122022019963. The next prime is 12122022020027. The reversal of 12122022020021 is 12002022022121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7906843471921 + 4215178548100 = 2811911^2 + 2053090^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12122022020021 - 2¹⁸ = 12122021757877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122022020027) 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, 4952735 + ... + 6983811.

It is an arithmetic number, because the mean of its divisors is an integer number (1516509466395).

Almost surely, 2^{12122022020021} is an apocalyptic number.

It is an amenable number.

12122022020021 is a deficient number, since it is larger than the sum of its proper divisors (10053711139).

12122022020021 is a wasteful number, since it uses less digits than its factorization.

12122022020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036023.

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

Adding to 12122022020021 its reverse (12002022022121), we get a palindrome (24124044042142).

The spelling of 12122022020021 in words is "twelve trillion, one hundred twenty-two billion, twenty-two million, twenty thousand, twenty-one".