2211202213021 has 8 divisors (see below), whose sum is σ = 2341631644920. Its totient is φ = 2080812638208.

The previous prime is 2211202212937. The next prime is 2211202213061. The reversal of 2211202213021 is 1203122021122.

It can be written as a sum of positive squares in 4 ways, for example, as 239452656921 + 1971749556100 = 489339^2 + 1404190^2 .

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

It is not a de Polignac number, because 2211202213021 - 2⁷ = 2211202212893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2211202213021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211202213061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9850006 + ... + 10071991.

It is an arithmetic number, because the mean of its divisors is an integer number (292703955615).

Almost surely, 2^{2211202213021} is an apocalyptic number.

It is an amenable number.

2211202213021 is a deficient number, since it is larger than the sum of its proper divisors (130429431899).

2211202213021 is a wasteful number, since it uses less digits than its factorization.

2211202213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19928543.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2211202213021 its reverse (1203122021122), we get a palindrome (3414324234143).

The spelling of 2211202213021 in words is "two trillion, two hundred eleven billion, two hundred two million, two hundred thirteen thousand, twenty-one".