11222100201220 has 12 divisors (see below), whose sum is σ = 23566410422604. Its totient is φ = 4488840080480.

The previous prime is 11222100201211. The next prime is 11222100201251. The reversal of 11222100201220 is 2210200122211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6557614694656 + 4664485506564 = 2560784^2 + 2159742^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11222100201194 and 11222100201203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280552505011 + ... + 280552505050.

It is an arithmetic number, because the mean of its divisors is an integer number (1963867535217).

Almost surely, 2^{11222100201220} is an apocalyptic number.

11222100201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222100201220 is an abundant number, since it is smaller than the sum of its proper divisors (12344310221384).

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

11222100201220 is a wasteful number, since it uses less digits than its factorization.

11222100201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561105010070 (or 561105010068 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11222100201220 its reverse (2210200122211), we get a palindrome (13432300323431).

The spelling of 11222100201220 in words is "eleven trillion, two hundred twenty-two billion, one hundred million, two hundred one thousand, two hundred twenty".