1322221213012 has 36 divisors (see below), whose sum is σ = 2700155794644. Its totient is φ = 564878616960.

The previous prime is 1322221213009. The next prime is 1322221213043. The reversal of 1322221213012 is 2103121222231.

It can be written as a sum of positive squares in 2 ways, for example, as 658116827536 + 664104385476 = 811244^2 + 814926^2 .

It is a super-2 number, since 2×1322221213012² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10578289 + ... + 10702552.

It is an arithmetic number, because the mean of its divisors is an integer number (75004327629).

Almost surely, 2^{1322221213012} is an apocalyptic number.

It is an amenable number.

1322221213012 is an abundant number, since it is smaller than the sum of its proper divisors (1377934581632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1322221213012 is a wasteful number, since it uses less digits than its factorization.

1322221213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21281176 (or 21281167 counting only the distinct ones).

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

Adding to 1322221213012 its reverse (2103121222231), we get a palindrome (3425342435243).

The spelling of 1322221213012 in words is "one trillion, three hundred twenty-two billion, two hundred twenty-one million, two hundred thirteen thousand, twelve".