121142101120220 has 24 divisors (see below), whose sum is σ = 254972675152944. Its totient is φ = 48347457057536.

The previous prime is 121142101120207. The next prime is 121142101120223. The reversal of 121142101120220 is 22021101241121.

It is a super-3 number, since 3×121142101120220³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121142101120192 and 121142101120201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121142101120223) 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, 6836452829 + ... + 6836470548.

It is an arithmetic number, because the mean of its divisors is an integer number (10623861464706).

Almost surely, 2^{121142101120220} is an apocalyptic number.

121142101120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121142101120220 is an abundant number, since it is smaller than the sum of its proper divisors (133830574032724).

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

121142101120220 is a wasteful number, since it uses less digits than its factorization.

121142101120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13672923829 (or 13672923827 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121142101120220 its reverse (22021101241121), we get a palindrome (143163202361341).

The spelling of 121142101120220 in words is "one hundred twenty-one trillion, one hundred forty-two billion, one hundred one million, one hundred twenty thousand, two hundred twenty".