1321242221022 has 16 divisors (see below), whose sum is σ = 2658307704192. Its totient is φ = 437776863320.

The previous prime is 1321242220979. The next prime is 1321242221027. The reversal of 1321242221022 is 2201222421231.

It is a super-2 number, since 2×1321242221022² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321242220983 and 1321242221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321242221027) 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, 659301504 + ... + 659303507.

It is an arithmetic number, because the mean of its divisors is an integer number (166144231512).

Almost surely, 2^{1321242221022} is an apocalyptic number.

1321242221022 is an abundant number, since it is smaller than the sum of its proper divisors (1337065483170).

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

1321242221022 is a wasteful number, since it uses less digits than its factorization.

1321242221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318605183.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1321242221022 its reverse (2201222421231), we get a palindrome (3522464642253).

The spelling of 1321242221022 in words is "one trillion, three hundred twenty-one billion, two hundred forty-two million, two hundred twenty-one thousand, twenty-two".