121023342140 has 12 divisors (see below), whose sum is σ = 254149018536. Its totient is φ = 48409336848.

The previous prime is 121023342127. The next prime is 121023342199. The reversal of 121023342140 is 41243320121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025583534 + ... + 3025583573.

It is an arithmetic number, because the mean of its divisors is an integer number (21179084878).

Almost surely, 2^121023342140 is an apocalyptic number.

121023342140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121023342140 is an abundant number, since it is smaller than the sum of its proper divisors (133125676396).

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

121023342140 is a wasteful number, since it uses less digits than its factorization.

121023342140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051167116 (or 6051167114 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 121023342140 its reverse (41243320121), we get a palindrome (162266662261).

The spelling of 121023342140 in words is "one hundred twenty-one billion, twenty-three million, three hundred forty-two thousand, one hundred forty".