11212222021020 has 48 divisors (see below), whose sum is σ = 34882468511520. Its totient is φ = 2989925872128.

The previous prime is 11212222021001. The next prime is 11212222021051. The reversal of 11212222021020 is 2012022221211.

It is a happy number.

11212222021020 is a `hidden beast` number, since 1 + 1 + 212 + 2 + 220 + 210 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11212222020984 and 11212222021002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10381686517 + ... + 10381687596.

It is an arithmetic number, because the mean of its divisors is an integer number (726718093990).

Almost surely, 2^{11212222021020} is an apocalyptic number.

11212222021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212222021020 is an abundant number, since it is smaller than the sum of its proper divisors (23670246490500).

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

11212222021020 is a wasteful number, since it uses less digits than its factorization.

11212222021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20763374131 (or 20763374123 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11212222021020 its reverse (2012022221211), we get a palindrome (13224244242231).

The spelling of 11212222021020 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-two million, twenty-one thousand, twenty".