2022001221 has 16 divisors (see below), whose sum is σ = 2760234048. Its totient is φ = 1316208000.

The previous prime is 2022001217. The next prime is 2022001229. The reversal of 2022001221 is 1221002202.

It is not a de Polignac number, because 2022001221 - 2² = 2022001217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2022001197 and 2022001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022001229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15255 + ... + 65396.

It is an arithmetic number, because the mean of its divisors is an integer number (172514628).

Almost surely, 2^2022001221 is an apocalyptic number.

It is an amenable number.

2022001221 is a deficient number, since it is larger than the sum of its proper divisors (738232827).

2022001221 is a wasteful number, since it uses less digits than its factorization.

2022001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80852.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2022001221 is about 44966.6678885594. The cubic root of 2022001221 is about 1264.5241787660.

Adding to 2022001221 its reverse (1221002202), we get a palindrome (3243003423).

The spelling of 2022001221 in words is "two billion, twenty-two million, one thousand, two hundred twenty-one".