121221323422 has 16 divisors (see below), whose sum is σ = 181996380720. Its totient is φ = 60555892032.

The previous prime is 121221323351. The next prime is 121221323437. The reversal of 121221323422 is 224323122121.

It is a super-2 number, since 2×121221323422² (a number of 23 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 7 ways as a sum of consecutive naturals, for example, 13210428 + ... + 13219600.

It is an arithmetic number, because the mean of its divisors is an integer number (11374773795).

Almost surely, 2^121221323422 is an apocalyptic number.

121221323422 is a deficient number, since it is larger than the sum of its proper divisors (60775057298).

121221323422 is a wasteful number, since it uses less digits than its factorization.

121221323422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14427.

The product of its digits is 2304, while the sum is 25.

Adding to 121221323422 its reverse (224323122121), we get a palindrome (345544445543).

The spelling of 121221323422 in words is "one hundred twenty-one billion, two hundred twenty-one million, three hundred twenty-three thousand, four hundred twenty-two".