11211222022220 has 48 divisors (see below), whose sum is σ = 26281190251008. Its totient is φ = 3981998516160.

The previous prime is 11211222022127. The next prime is 11211222022223. The reversal of 11211222022220 is 2222022211211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11211222022192 and 11211222022201.

It is not an unprimeable number, because it can be changed into a prime (11211222022223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 592549844 + ... + 592568763.

It is an arithmetic number, because the mean of its divisors is an integer number (547524796896).

Almost surely, 2^{11211222022220} is an apocalyptic number.

11211222022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211222022220 is an abundant number, since it is smaller than the sum of its proper divisors (15069968228788).

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

11211222022220 is a wasteful number, since it uses less digits than its factorization.

11211222022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185118670 (or 1185118668 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11211222022220 its reverse (2222022211211), we get a palindrome (13433244233431).

The spelling of 11211222022220 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-two million, twenty-two thousand, two hundred twenty".