11011211002012 has 48 divisors (see below), whose sum is σ = 22199119316640. Its totient is φ = 4733839613952.

The previous prime is 11011211001949. The next prime is 11011211002019. The reversal of 11011211002012 is 21020011211011.

It is a happy number.

It is a super-2 number, since 2×11011211002012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 11011211001983 and 11011211002001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011211002019) 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, 64121062 + ... + 64292557.

It is an arithmetic number, because the mean of its divisors is an integer number (462481652430).

Almost surely, 2^{11011211002012} is an apocalyptic number.

It is an amenable number.

11011211002012 is an abundant number, since it is smaller than the sum of its proper divisors (11187908314628).

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

11011211002012 is a wasteful number, since it uses less digits than its factorization.

11011211002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128413750 (or 128413748 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11011211002012 its reverse (21020011211011), we get a palindrome (32031222213023).

The spelling of 11011211002012 in words is "eleven trillion, eleven billion, two hundred eleven million, two thousand, twelve".