121231001310211 has 48 divisors (see below), whose sum is σ = 133661507616000. Its totient is φ = 109886852140416.

The previous prime is 121231001310187. The next prime is 121231001310217. The reversal of 121231001310211 is 112013100132121.

It is not a de Polignac number, because 121231001310211 - 2¹⁷ = 121231001179139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121231001310217) 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 47 ways as a sum of consecutive naturals, for example, 15042929500 + ... + 15042937558.

It is an arithmetic number, because the mean of its divisors is an integer number (2784614742000).

Almost surely, 2^{121231001310211} is an apocalyptic number.

121231001310211 is a deficient number, since it is larger than the sum of its proper divisors (12430506305789).

121231001310211 is a wasteful number, since it uses less digits than its factorization.

121231001310211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14540 (or 14527 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 121231001310211 its reverse (112013100132121), we get a palindrome (233244101442332).

The spelling of 121231001310211 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, one million, three hundred ten thousand, two hundred eleven".