121431031201211 has 4 divisors (see below), whose sum is σ = 121455072194424. Its totient is φ = 121406990208000.

The previous prime is 121431031201057. The next prime is 121431031201237. The reversal of 121431031201211 is 112102130134121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121431031201211 - 2³⁴ = 121413851332027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121431033201211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12020489030 + ... + 12020499131.

It is an arithmetic number, because the mean of its divisors is an integer number (30363768048606).

Almost surely, 2^{121431031201211} is an apocalyptic number.

121431031201211 is a deficient number, since it is larger than the sum of its proper divisors (24040993213).

121431031201211 is an equidigital number, since it uses as much as digits as its factorization.

121431031201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24040993212.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 121431031201211 its reverse (112102130134121), we get a palindrome (233533161335332).

The spelling of 121431031201211 in words is "one hundred twenty-one trillion, four hundred thirty-one billion, thirty-one million, two hundred one thousand, two hundred eleven".