121421251322 has 16 divisors (see below), whose sum is σ = 209670068160. Its totient is φ = 51657841248.

The previous prime is 121421251321. The next prime is 121421251409. The reversal of 121421251322 is 223152124121.

It is a junction number, because it is equal to n+sod(n) for n = 121421251291 and 121421251300.

It is not an unprimeable number, because it can be changed into a prime (121421251321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31651172 + ... + 31655007.

It is an arithmetic number, because the mean of its divisors is an integer number (13104379260).

Almost surely, 2^121421251322 is an apocalyptic number.

121421251322 is a deficient number, since it is larger than the sum of its proper divisors (88248816838).

121421251322 is a wasteful number, since it uses less digits than its factorization.

121421251322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63306325.

The product of its digits is 1920, while the sum is 26.

Adding to 121421251322 its reverse (223152124121), we get a palindrome (344573375443).

The spelling of 121421251322 in words is "one hundred twenty-one billion, four hundred twenty-one million, two hundred fifty-one thousand, three hundred twenty-two".