11211120201220 has 24 divisors (see below), whose sum is σ = 23546108646144. Its totient is φ = 4483923085536.

The previous prime is 11211120201173. The next prime is 11211120201223. The reversal of 11211120201220 is 2210202111211.

It is a junction number, because it is equal to n+sod(n) for n = 11211120201194 and 11211120201203.

It is not an unprimeable number, because it can be changed into a prime (11211120201223) 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, 32637054 + ... + 32978773.

It is an arithmetic number, because the mean of its divisors is an integer number (981087860256).

Almost surely, 2^{11211120201220} is an apocalyptic number.

11211120201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211120201220 is an abundant number, since it is smaller than the sum of its proper divisors (12334988444924).

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

11211120201220 is a wasteful number, since it uses less digits than its factorization.

11211120201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65624379 (or 65624377 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11211120201220 its reverse (2210202111211), we get a palindrome (13421322312431).

The spelling of 11211120201220 in words is "eleven trillion, two hundred eleven billion, one hundred twenty million, two hundred one thousand, two hundred twenty".