121242144410 has 8 divisors (see below), whose sum is σ = 218235859956. Its totient is φ = 48496857760.

The previous prime is 121242144349. The next prime is 121242144421. The reversal of 121242144410 is 14441242121.

It can be written as a sum of positive squares in 2 ways, for example, as 111662237281 + 9579907129 = 334159^2 + 97877^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121242144410² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121242144410.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6062107211 + ... + 6062107230.

Almost surely, 2^121242144410 is an apocalyptic number.

121242144410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121242144410 is a deficient number, since it is larger than the sum of its proper divisors (96993715546).

121242144410 is a wasteful number, since it uses less digits than its factorization.

121242144410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12124214448.

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 121242144410 its reverse (14441242121), we get a palindrome (135683386531).

The spelling of 121242144410 in words is "one hundred twenty-one billion, two hundred forty-two million, one hundred forty-four thousand, four hundred ten".