11211001312 has 24 divisors (see below), whose sum is σ = 25224753456. Its totient is φ = 4804714752.

The previous prime is 11211001303. The next prime is 11211001349. The reversal of 11211001312 is 21310011211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11211001292 and 11211001301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25024333 + ... + 25024780.

It is an arithmetic number, because the mean of its divisors is an integer number (1051031394).

Almost surely, 2^11211001312 is an apocalyptic number.

It is an amenable number.

11211001312 is an abundant number, since it is smaller than the sum of its proper divisors (14013752144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211001312 is an equidigital number, since it uses as much as digits as its factorization.

11211001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50049130 (or 50049122 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11211001312 its reverse (21310011211), we get a palindrome (32521012523).

The spelling of 11211001312 in words is "eleven billion, two hundred eleven million, one thousand, three hundred twelve".