121321231301210 has 32 divisors (see below), whose sum is σ = 224281143050112. Its totient is φ = 47216740536000.

The previous prime is 121321231301183. The next prime is 121321231301239. The reversal of 121321231301210 is 12103132123121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160851629 + ... + 161604111.

It is an arithmetic number, because the mean of its divisors is an integer number (7008785720316).

Almost surely, 2^{121321231301210} is an apocalyptic number.

121321231301210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121321231301210 is a deficient number, since it is larger than the sum of its proper divisors (102959911748902).

121321231301210 is a wasteful number, since it uses less digits than its factorization.

121321231301210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188278.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121321231301210 its reverse (12103132123121), we get a palindrome (133424363424331).

The spelling of 121321231301210 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, two hundred thirty-one million, three hundred one thousand, two hundred ten".