121103000020 has 24 divisors (see below), whose sum is σ = 254379936384. Its totient is φ = 48429078816.

The previous prime is 121103000017. The next prime is 121103000041. The reversal of 121103000020 is 20000301121.

It is a super-2 number, since 2×121103000020² (a number of 23 digits) contains 22 as substring.

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 = 121102999970 and 121103000006.

It is a congruent 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, 675432 + ... + 835711.

It is an arithmetic number, because the mean of its divisors is an integer number (10599164016).

Almost surely, 2^121103000020 is an apocalyptic number.

121103000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121103000020 is an abundant number, since it is smaller than the sum of its proper divisors (133276936364).

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

121103000020 is a wasteful number, since it uses less digits than its factorization.

121103000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515159 (or 1515157 counting only the distinct ones).

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

Adding to 121103000020 its reverse (20000301121), we get a palindrome (141103301141).

The spelling of 121103000020 in words is "one hundred twenty-one billion, one hundred three million, twenty", and thus it is an aban number.