121221130434 has 16 divisors (see below), whose sum is σ = 242770337760. Its totient is φ = 40352364000.

The previous prime is 121221130423. The next prime is 121221130469. The reversal of 121221130434 is 434031122121.

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, 13665067 + ... + 13673934.

It is an arithmetic number, because the mean of its divisors is an integer number (15173146110).

Almost surely, 2^121221130434 is an apocalyptic number.

121221130434 is an abundant number, since it is smaller than the sum of its proper divisors (121549207326).

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

121221130434 is a wasteful number, since it uses less digits than its factorization.

121221130434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27339745.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 121221130434 its reverse (434031122121), we get a palindrome (555252252555).

The spelling of 121221130434 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred thirty thousand, four hundred thirty-four".