121142110442220 has 144 divisors (see below), whose sum is σ = 434440672061760. Its totient is φ = 26734810572288.

The previous prime is 121142110442189. The next prime is 121142110442237. The reversal of 121142110442220 is 22244011241121.

121142110442220 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 4 + 211 + 0 + 4 + 422 + 20 = 666.

It is a super-3 number, since 3×121142110442220³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1657627807 + ... + 1657700886.

It is an arithmetic number, because the mean of its divisors is an integer number (3016949111540).

Almost surely, 2^{121142110442220} is an apocalyptic number.

121142110442220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121142110442220 is an abundant number, since it is smaller than the sum of its proper divisors (313298561619540).

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

121142110442220 is a wasteful number, since it uses less digits than its factorization.

121142110442220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315328744 (or 3315328739 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

Adding to 121142110442220 its reverse (22244011241121), we get a palindrome (143386121683341).

The spelling of 121142110442220 in words is "one hundred twenty-one trillion, one hundred forty-two billion, one hundred ten million, four hundred forty-two thousand, two hundred twenty".