2022011021 has 4 divisors (see below), whose sum is σ = 2023657500. Its totient is φ = 2020364544.

The previous prime is 2022011009. The next prime is 2022011041. The reversal of 2022011021 is 1201102202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1368186121 + 653824900 = 36989^2 + 25570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2022011021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2022010993 and 2022011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022011041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821396 + ... + 823853.

It is an arithmetic number, because the mean of its divisors is an integer number (505914375).

Almost surely, 2^2022011021 is an apocalyptic number.

It is an amenable number.

2022011021 is a deficient number, since it is larger than the sum of its proper divisors (1646479).

2022011021 is a wasteful number, since it uses less digits than its factorization.

2022011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646478.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2022011021 is about 44966.7768580315. The cubic root of 2022011021 is about 1264.5262216789.

Adding to 2022011021 its reverse (1201102202), we get a palindrome (3223113223).

The spelling of 2022011021 in words is "two billion, twenty-two million, eleven thousand, twenty-one".