1211022332221 has 8 divisors (see below), whose sum is σ = 1317090550104. Its totient is φ = 1106798779200.

The previous prime is 1211022332189. The next prime is 1211022332231. The reversal of 1211022332221 is 1222332201121.

It can be written as a sum of positive squares in 4 ways, for example, as 618014527321 + 593007804900 = 786139^2 + 770070^2 .

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 1211022332221 - 2⁵ = 1211022332189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211022332192 and 1211022332201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211022332231) 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, 461164846 + ... + 461167471.

It is an arithmetic number, because the mean of its divisors is an integer number (164636318763).

Almost surely, 2^{1211022332221} is an apocalyptic number.

It is an amenable number.

1211022332221 is a deficient number, since it is larger than the sum of its proper divisors (106068217883).

1211022332221 is a wasteful number, since it uses less digits than its factorization.

1211022332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922332431.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1211022332221 its reverse (1222332201121), we get a palindrome (2433354533342).

The spelling of 1211022332221 in words is "one trillion, two hundred eleven billion, twenty-two million, three hundred thirty-two thousand, two hundred twenty-one".