121111322120 has 32 divisors (see below), whose sum is σ = 272551029120. Its totient is φ = 48435541440.

The previous prime is 121111322117. The next prime is 121111322141. The reversal of 121111322120 is 21223111121.

It is a happy 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, 60416 + ... + 495855.

It is an arithmetic number, because the mean of its divisors is an integer number (8517219660).

Almost surely, 2^121111322120 is an apocalyptic number.

121111322120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111322120 is an abundant number, since it is smaller than the sum of its proper divisors (151439707000).

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

121111322120 is a wasteful number, since it uses less digits than its factorization.

121111322120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561725 (or 561721 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121111322120 its reverse (21223111121), we get a palindrome (142334433241).

The spelling of 121111322120 in words is "one hundred twenty-one billion, one hundred eleven million, three hundred twenty-two thousand, one hundred twenty".