11212220201100 has 72 divisors (see below), whose sum is σ = 32470426218048. Its totient is φ = 2987184763200.

The previous prime is 11212220201087. The next prime is 11212220201137. The reversal of 11212220201100 is 110202221211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11212220201100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16801054 + ... + 17455653.

Almost surely, 2^{11212220201100} is an apocalyptic number.

11212220201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212220201100 is an abundant number, since it is smaller than the sum of its proper divisors (21258206016948).

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

11212220201100 is a wasteful number, since it uses less digits than its factorization.

11212220201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34257815 (or 34257808 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11212220201100 its reverse (110202221211), we get a palindrome (11322422422311).

The spelling of 11212220201100 in words is "eleven trillion, two hundred twelve billion, two hundred twenty million, two hundred one thousand, one hundred".