2221022011021 has 8 divisors (see below), whose sum is σ = 2432586225888. Its totient is φ = 2011066650000.

The previous prime is 2221022011007. The next prime is 2221022011037. The reversal of 2221022011021 is 1201102201222.

It is a happy number.

2221022011021 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 2221022011021 - 2²¹ = 2221019913869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221022010986 and 2221022011004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221022011051) 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, 402210570 + ... + 402216091.

It is an arithmetic number, because the mean of its divisors is an integer number (304073278236).

Almost surely, 2^{2221022011021} is an apocalyptic number.

It is an amenable number.

2221022011021 is a deficient number, since it is larger than the sum of its proper divisors (211564214867).

2221022011021 is a wasteful number, since it uses less digits than its factorization.

2221022011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804426923.

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

Adding to 2221022011021 its reverse (1201102201222), we get a palindrome (3422124212243).

The spelling of 2221022011021 in words is "two trillion, two hundred twenty-one billion, twenty-two million, eleven thousand, twenty-one".