11212111211000 has 128 divisors (see below), whose sum is σ = 29986673558400. Its totient is φ = 3843859507200.

The previous prime is 11212111210999. The next prime is 11212111211009. The reversal of 11212111211000 is 11211121211.

It is a super-2 number, since 2×11212111211000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212111211009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104645456 + ... + 104752544.

It is an arithmetic number, because the mean of its divisors is an integer number (234270887175).

Almost surely, 2^{11212111211000} is an apocalyptic number.

11212111211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11212111211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14993336779200).

11212111211000 is an abundant number, since it is smaller than the sum of its proper divisors (18774562347400).

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

11212111211000 is a wasteful number, since it uses less digits than its factorization.

11212111211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122074 (or 122060 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11212111211000 its reverse (11211121211), we get a palindrome (11223322332211).

The spelling of 11212111211000 in words is "eleven trillion, two hundred twelve billion, one hundred eleven million, two hundred eleven thousand".