221002020122021 has 8 divisors (see below), whose sum is σ = 228282097817088. Its totient is φ = 213731378694000.

The previous prime is 221002020122011. The next prime is 221002020122063. The reversal of 221002020122021 is 120221020200122.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221002020122021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002020122011) 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, 2359019150 + ... + 2359112831.

It is an arithmetic number, because the mean of its divisors is an integer number (28535262227136).

Almost surely, 2^{221002020122021} is an apocalyptic number.

It is an amenable number.

221002020122021 is a deficient number, since it is larger than the sum of its proper divisors (7280077695067).

221002020122021 is a wasteful number, since it uses less digits than its factorization.

221002020122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718133523.

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

Adding to 221002020122021 its reverse (120221020200122), we get a palindrome (341223040322143).

The spelling of 221002020122021 in words is "two hundred twenty-one trillion, two billion, twenty million, one hundred twenty-two thousand, twenty-one".