121103141240 has 64 divisors (see below), whose sum is σ = 274564296000. Its totient is φ = 48071688192.

The previous prime is 121103141231. The next prime is 121103141347. The reversal of 121103141240 is 42141301121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6863069 + ... + 6880691.

It is an arithmetic number, because the mean of its divisors is an integer number (4290067125).

Almost surely, 2^121103141240 is an apocalyptic number.

121103141240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121103141240 is an abundant number, since it is smaller than the sum of its proper divisors (153461154760).

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

121103141240 is a wasteful number, since it uses less digits than its factorization.

121103141240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18936 (or 18932 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121103141240 its reverse (42141301121), we get a palindrome (163244442361).

The spelling of 121103141240 in words is "one hundred twenty-one billion, one hundred three million, one hundred forty-one thousand, two hundred forty".