121121102120 has 64 divisors (see below), whose sum is σ = 273574454400. Its totient is φ = 48261633280.

The previous prime is 121121102111. The next prime is 121121102129. The reversal of 121121102120 is 21201121121.

It is an interprime number because it is at equal distance from previous prime (121121102111) and next prime (121121102129).

It is a junction number, because it is equal to n+sod(n) for n = 121121102095 and 121121102104.

It is not an unprimeable number, because it can be changed into a prime (121121102129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36186287 + ... + 36189633.

It is an arithmetic number, because the mean of its divisors is an integer number (4274600850).

Almost surely, 2^121121102120 is an apocalyptic number.

121121102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121102120 is an abundant number, since it is smaller than the sum of its proper divisors (152453352280).

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

121121102120 is a wasteful number, since it uses less digits than its factorization.

121121102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6578 (or 6574 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121121102120 its reverse (21201121121), we get a palindrome (142322223241).

The spelling of 121121102120 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred two thousand, one hundred twenty".