211231121111013 has 16 divisors (see below), whose sum is σ = 286893235008000. Its totient is φ = 138202846569840.

The previous prime is 211231121110987. The next prime is 211231121111053. The reversal of 211231121111013 is 310111121132112.

211231121111013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211231121111013 - 2¹³ = 211231121102821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211231121111053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 996051043 + ... + 996263088.

It is an arithmetic number, because the mean of its divisors is an integer number (17930827188000).

Almost surely, 2^{211231121111013} is an apocalyptic number.

It is an amenable number.

211231121111013 is a deficient number, since it is larger than the sum of its proper divisors (75662113896987).

211231121111013 is a wasteful number, since it uses less digits than its factorization.

211231121111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992314792.

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 211231121111013 its reverse (310111121132112), we get a palindrome (521342242243125).

The spelling of 211231121111013 in words is "two hundred eleven trillion, two hundred thirty-one billion, one hundred twenty-one million, one hundred eleven thousand, thirteen".