121222564430 has 64 divisors (see below), whose sum is σ = 250669382400. Its totient is φ = 41743537920.

The previous prime is 121222564429. The next prime is 121222564457. The reversal of 121222564430 is 34465222121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5659481 + ... + 5680859.

It is an arithmetic number, because the mean of its divisors is an integer number (3916709100).

Almost surely, 2^121222564430 is an apocalyptic number.

121222564430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222564430 is an abundant number, since it is smaller than the sum of its proper divisors (129446817970).

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

121222564430 is a wasteful number, since it uses less digits than its factorization.

121222564430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24129.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 121222564430 its reverse (34465222121), we get a palindrome (155687786551).

The spelling of 121222564430 in words is "one hundred twenty-one billion, two hundred twenty-two million, five hundred sixty-four thousand, four hundred thirty".