2221022101211 has 4 divisors (see below), whose sum is σ = 2221168361352. Its totient is φ = 2220875841072.

The previous prime is 2221022101169. The next prime is 2221022101313. The reversal of 2221022101211 is 1121012201222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221022101211 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 2221022101211.

It is not an unprimeable number, because it can be changed into a prime (2220022101211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73107290 + ... + 73137663.

It is an arithmetic number, because the mean of its divisors is an integer number (555292090338).

Almost surely, 2^{2221022101211} is an apocalyptic number.

2221022101211 is a deficient number, since it is larger than the sum of its proper divisors (146260141).

2221022101211 is a wasteful number, since it uses less digits than its factorization.

2221022101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146260140.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2221022101211 its reverse (1121012201222), we get a palindrome (3342034302433).

The spelling of 2221022101211 in words is "two trillion, two hundred twenty-one billion, twenty-two million, one hundred one thousand, two hundred eleven".