11211222111020 has 192 divisors, whose sum is σ = 24383842560000. Its totient is φ = 4327698723840.

The previous prime is 11211222110993. The next prime is 11211222111109. The reversal of 11211222111020 is 2011122211211.

It is a self number, because there is not a number n which added to its sum of digits gives 11211222111020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22467378731 + ... + 22467379229.

It is an arithmetic number, because the mean of its divisors is an integer number (126999180000).

Almost surely, 2^{11211222111020} is an apocalyptic number.

11211222111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211222111020 is an abundant number, since it is smaller than the sum of its proper divisors (13172620448980).

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

11211222111020 is a wasteful number, since it uses less digits than its factorization.

11211222111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528 (or 1526 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11211222111020 its reverse (2011122211211), we get a palindrome (13222344322231).

The spelling of 11211222111020 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, twenty".