2221010222021 has 16 divisors (see below), whose sum is σ = 2359536030720. Its totient is φ = 2086326063360.

The previous prime is 2221010221957. The next prime is 2221010222027. The reversal of 2221010222021 is 1202220101222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2221010222021 - 2⁶ = 2221010221957 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 (2221010222027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3636725 + ... + 4203306.

It is an arithmetic number, because the mean of its divisors is an integer number (147471001920).

Almost surely, 2^{2221010222021} is an apocalyptic number.

It is an amenable number.

2221010222021 is a deficient number, since it is larger than the sum of its proper divisors (138525808699).

2221010222021 is a wasteful number, since it uses less digits than its factorization.

2221010222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7840276.

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

Adding to 2221010222021 its reverse (1202220101222), we get a palindrome (3423230323243).

The spelling of 2221010222021 in words is "two trillion, two hundred twenty-one billion, ten million, two hundred twenty-two thousand, twenty-one".