11212111010100 has 2304 divisors, whose sum is σ = 46085274353664. Its totient is φ = 2030469120000.

The previous prime is 11212111010047. The next prime is 11212111010119. The reversal of 11212111010100 is 101011121211.

It is a super-2 number, since 2×11212111010100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 767 ways as a sum of consecutive naturals, for example, 108855446649 + ... + 108855446751.

It is an arithmetic number, because the mean of its divisors is an integer number (20002289216).

Almost surely, 2^{11212111010100} is an apocalyptic number.

11212111010100 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 11212111010100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23042637176832).

11212111010100 is an abundant number, since it is smaller than the sum of its proper divisors (34873163343564).

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

11212111010100 is a wasteful number, since it uses less digits than its factorization.

11212111010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11212111010100 its reverse (101011121211), we get a palindrome (11313122131311).

The spelling of 11212111010100 in words is "eleven trillion, two hundred twelve billion, one hundred eleven million, ten thousand, one hundred".