121221022112 has 24 divisors (see below), whose sum is σ = 246352401792. Its totient is φ = 58655332800.

The previous prime is 121221022049. The next prime is 121221022127. The reversal of 121221022112 is 211220122121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61098314 + ... + 61100297.

It is an arithmetic number, because the mean of its divisors is an integer number (10264683408).

Almost surely, 2^121221022112 is an apocalyptic number.

It is an amenable number.

121221022112 is an abundant number, since it is smaller than the sum of its proper divisors (125131379680).

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

121221022112 is a wasteful number, since it uses less digits than its factorization.

121221022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122198652 (or 122198644 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121221022112 its reverse (211220122121), we get a palindrome (332441144233).

The spelling of 121221022112 in words is "one hundred twenty-one billion, two hundred twenty-one million, twenty-two thousand, one hundred twelve".