1222201011021 has 16 divisors (see below), whose sum is σ = 1693220932800. Its totient is φ = 783238429568.

The previous prime is 1222201011013. The next prime is 1222201011049. The reversal of 1222201011021 is 1201101022221.

It is a cyclic number.

It is not a de Polignac number, because 1222201011021 - 2³ = 1222201011013 is a prime.

It is a super-2 number, since 2×1222201011021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222201011071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30923616 + ... + 30963113.

It is an arithmetic number, because the mean of its divisors is an integer number (105826308300).

Almost surely, 2^{1222201011021} is an apocalyptic number.

It is an amenable number.

1222201011021 is a deficient number, since it is larger than the sum of its proper divisors (471019921779).

1222201011021 is a wasteful number, since it uses less digits than its factorization.

1222201011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61886988.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1222201011021 its reverse (1201101022221), we get a palindrome (2423302033242).

The spelling of 1222201011021 in words is "one trillion, two hundred twenty-two billion, two hundred one million, eleven thousand, twenty-one".