121243040410 has 64 divisors (see below), whose sum is σ = 225802080000. Its totient is φ = 46836541440.

The previous prime is 121243040383. The next prime is 121243040419. The reversal of 121243040410 is 14040342121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121243040419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77174925 + ... + 77176495.

It is an arithmetic number, because the mean of its divisors is an integer number (3528157500).

Almost surely, 2^121243040410 is an apocalyptic number.

121243040410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121243040410 is a deficient number, since it is larger than the sum of its proper divisors (104559039590).

121243040410 is a wasteful number, since it uses less digits than its factorization.

121243040410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 121243040410 its reverse (14040342121), we get a palindrome (135283382531).

The spelling of 121243040410 in words is "one hundred twenty-one billion, two hundred forty-three million, forty thousand, four hundred ten".