121103020 has 24 divisors (see below), whose sum is σ = 259729344. Its totient is φ = 47410176.

The previous prime is 121102999. The next prime is 121103023. The reversal of 121103020 is 20301121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 121102988 and 121103006.

It is not an unprimeable number, because it can be changed into a prime (121103023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63477 + ... + 65356.

It is an arithmetic number, because the mean of its divisors is an integer number (10822056).

Almost surely, 2^121103020 is an apocalyptic number.

121103020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121103020 is an abundant number, since it is smaller than the sum of its proper divisors (138626324).

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

121103020 is a wasteful number, since it uses less digits than its factorization.

121103020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128889 (or 128887 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 121103020 is about 11004.6817309725. The cubic root of 121103020 is about 494.7490752854.

Adding to 121103020 its reverse (20301121), we get a palindrome (141404141).

The spelling of 121103020 in words is "one hundred twenty-one million, one hundred three thousand, twenty".