1321013022122 has 4 divisors (see below), whose sum is σ = 1981519533186. Its totient is φ = 660506511060.

The previous prime is 1321013022079. The next prime is 1321013022127. The reversal of 1321013022122 is 2212203101231.

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

It can be written as a sum of positive squares in only one way, i.e., 935706047761 + 385306974361 = 967319^2 + 620731^2 .

It is a super-2 number, since 2×1321013022122² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321013022094 and 1321013022103.

It is not an unprimeable number, because it can be changed into a prime (1321013022127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330253255529 + ... + 330253255532.

Almost surely, 2^{1321013022122} is an apocalyptic number.

1321013022122 is a deficient number, since it is larger than the sum of its proper divisors (660506511064).

1321013022122 is an equidigital number, since it uses as much as digits as its factorization.

1321013022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660506511063.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1321013022122 its reverse (2212203101231), we get a palindrome (3533216123353).

The spelling of 1321013022122 in words is "one trillion, three hundred twenty-one billion, thirteen million, twenty-two thousand, one hundred twenty-two".