121302224240 has 20 divisors (see below), whose sum is σ = 282027671544. Its totient is φ = 48520889664.

The previous prime is 121302224231. The next prime is 121302224249. The reversal of 121302224240 is 42422203121.

It is an interprime number because it is at equal distance from previous prime (121302224231) and next prime (121302224249).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121302224249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758138822 + ... + 758138981.

Almost surely, 2^121302224240 is an apocalyptic number.

121302224240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121302224240 is an abundant number, since it is smaller than the sum of its proper divisors (160725447304).

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

121302224240 is a wasteful number, since it uses less digits than its factorization.

121302224240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516277816 (or 1516277810 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 121302224240 its reverse (42422203121), we get a palindrome (163724427361).

The spelling of 121302224240 in words is "one hundred twenty-one billion, three hundred two million, two hundred twenty-four thousand, two hundred forty".