121320123201210 has 64 divisors (see below), whose sum is σ = 303911792992512. Its totient is φ = 30936866543616.

The previous prime is 121320123201181. The next prime is 121320123201253. The reversal of 121320123201210 is 12102321023121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21809809 + ... + 26801268.

It is an arithmetic number, because the mean of its divisors is an integer number (4748621765508).

Almost surely, 2^{121320123201210} is an apocalyptic number.

121320123201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121320123201210 is an abundant number, since it is smaller than the sum of its proper divisors (182591669791302).

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

121320123201210 is a wasteful number, since it uses less digits than its factorization.

121320123201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48614727.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 121320123201210 its reverse (12102321023121), we get a palindrome (133422444224331).

The spelling of 121320123201210 in words is "one hundred twenty-one trillion, three hundred twenty billion, one hundred twenty-three million, two hundred one thousand, two hundred ten".