11212100222020 has 24 divisors (see below), whose sum is σ = 23809965643800. Its totient is φ = 4434448626432.

The previous prime is 11212100221999. The next prime is 11212100222069. The reversal of 11212100222020 is 2022200121211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13867888644 + 11198232333376 = 117762^2 + 3346376^2 .

It is a super-2 number, since 2×11212100222020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11212100221985 and 11212100222003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3149464575 + ... + 3149468134.

It is an arithmetic number, because the mean of its divisors is an integer number (992081901825).

Almost surely, 2^{11212100222020} is an apocalyptic number.

11212100222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212100222020 is an abundant number, since it is smaller than the sum of its proper divisors (12597865421780).

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

11212100222020 is a wasteful number, since it uses less digits than its factorization.

11212100222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6298932807 (or 6298932805 counting only the distinct ones).

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

Adding to 11212100222020 its reverse (2022200121211), we get a palindrome (13234300343231).

The spelling of 11212100222020 in words is "eleven trillion, two hundred twelve billion, one hundred million, two hundred twenty-two thousand, twenty".