121311130111211 has 24 divisors (see below), whose sum is σ = 126986203378944. Its totient is φ = 115670128155120.

The previous prime is 121311130111153. The next prime is 121311130111247. The reversal of 121311130111211 is 112111031113121.

It is not a de Polignac number, because 121311130111211 - 2⁶ = 121311130111147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121311130111811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37223419700 + ... + 37223422958.

It is an arithmetic number, because the mean of its divisors is an integer number (5291091807456).

Almost surely, 2^{121311130111211} is an apocalyptic number.

121311130111211 is a deficient number, since it is larger than the sum of its proper divisors (5675073267733).

121311130111211 is an frugal number, since it uses more digits than its factorization.

121311130111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7959 (or 4700 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 20.

Adding to 121311130111211 its reverse (112111031113121), we get a palindrome (233422161224332).

The spelling of 121311130111211 in words is "one hundred twenty-one trillion, three hundred eleven billion, one hundred thirty million, one hundred eleven thousand, two hundred eleven".