121245226340 has 96 divisors (see below), whose sum is σ = 309369715200. Its totient is φ = 39012120576.

The previous prime is 121245226327. The next prime is 121245226343. The reversal of 121245226340 is 43622542121.

It is a junction number, because it is equal to n+sod(n) for n = 121245226297 and 121245226306.

It is not an unprimeable number, because it can be changed into a prime (121245226343) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 184565 + ... + 525884.

It is an arithmetic number, because the mean of its divisors is an integer number (3222601200).

Almost surely, 2^121245226340 is an apocalyptic number.

121245226340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121245226340 is an abundant number, since it is smaller than the sum of its proper divisors (188124488860).

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

121245226340 is a wasteful number, since it uses less digits than its factorization.

121245226340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710541 (or 710539 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 121245226340 its reverse (43622542121), we get a palindrome (164867768461).

The spelling of 121245226340 in words is "one hundred twenty-one billion, two hundred forty-five million, two hundred twenty-six thousand, three hundred forty".