121344111020 has 24 divisors (see below), whose sum is σ = 277988327568. Its totient is φ = 44125131200.

The previous prime is 121344111001. The next prime is 121344111041. The reversal of 121344111020 is 20111443121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121344110983 and 121344111001.

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, 275781851 + ... + 275782290.

It is an arithmetic number, because the mean of its divisors is an integer number (11582846982).

Almost surely, 2^121344111020 is an apocalyptic number.

121344111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121344111020 is an abundant number, since it is smaller than the sum of its proper divisors (156644216548).

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

121344111020 is a wasteful number, since it uses less digits than its factorization.

121344111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551564161 (or 551564159 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121344111020 its reverse (20111443121), we get a palindrome (141455554141).

The spelling of 121344111020 in words is "one hundred twenty-one billion, three hundred forty-four million, one hundred eleven thousand, twenty".