121020022012120 has 128 divisors (see below), whose sum is σ = 340837268083200. Its totient is φ = 37570245120000.

The previous prime is 121020022012103. The next prime is 121020022012139. The reversal of 121020022012120 is 21210220020121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121020022012094 and 121020022012103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77498265 + ... + 79044424.

It is an arithmetic number, because the mean of its divisors is an integer number (2662791156900).

Almost surely, 2^{121020022012120} is an apocalyptic number.

121020022012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020022012120 is an abundant number, since it is smaller than the sum of its proper divisors (219817246071080).

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

121020022012120 is a wasteful number, since it uses less digits than its factorization.

121020022012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156542969 (or 156542965 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121020022012120 its reverse (21210220020121), we get a palindrome (142230242032241).

The spelling of 121020022012120 in words is "one hundred twenty-one trillion, twenty billion, twenty-two million, twelve thousand, one hundred twenty".