11220011201172 has 24 divisors (see below), whose sum is σ = 27318288142656. Its totient is φ = 3577394875648.

The previous prime is 11220011201131. The next prime is 11220011201173. The reversal of 11220011201172 is 27110211002211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220011201173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20326106973 + ... + 20326107524.

It is an arithmetic number, because the mean of its divisors is an integer number (1138262005944).

Almost surely, 2^{11220011201172} is an apocalyptic number.

11220011201172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11220011201172 is an abundant number, since it is smaller than the sum of its proper divisors (16098276941484).

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

11220011201172 is a wasteful number, since it uses less digits than its factorization.

11220011201172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40652214527 (or 40652214525 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 21.

Adding to 11220011201172 its reverse (27110211002211), we get a palindrome (38330222203383).

The spelling of 11220011201172 in words is "eleven trillion, two hundred twenty billion, eleven million, two hundred one thousand, one hundred seventy-two".