221022001012021 has 8 divisors (see below), whose sum is σ = 241115818068288. Its totient is φ = 200928335268000.

The previous prime is 221022001012019. The next prime is 221022001012027. The reversal of 221022001012021 is 120210100220122.

It is a happy number.

221022001012021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221022001012021 - 2¹ = 221022001012019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221022001011986 and 221022001012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221022001012027) 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, 34763065 + ... + 40626526.

It is an arithmetic number, because the mean of its divisors is an integer number (30139477258536).

Almost surely, 2^{221022001012021} is an apocalyptic number.

It is an amenable number.

221022001012021 is a deficient number, since it is larger than the sum of its proper divisors (20093817056267).

221022001012021 is a wasteful number, since it uses less digits than its factorization.

221022001012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75656123.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221022001012021 its reverse (120210100220122), we get a palindrome (341232101232143).

The spelling of 221022001012021 in words is "two hundred twenty-one trillion, twenty-two billion, one million, twelve thousand, twenty-one".