11210221020 has 48 divisors (see below), whose sum is σ = 31495796640. Its totient is φ = 2979184896.

The previous prime is 11210221013. The next prime is 11210221051. The reversal of 11210221020 is 2012201211.

It is a super-3 number, since 3×11210221020³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11210220987 and 11210221005.

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, 301255 + ... + 336414.

It is an arithmetic number, because the mean of its divisors is an integer number (656162430).

Almost surely, 2^11210221020 is an apocalyptic number.

11210221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11210221020 is an abundant number, since it is smaller than the sum of its proper divisors (20285575620).

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

11210221020 is a wasteful number, since it uses less digits than its factorization.

11210221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637974 (or 637972 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11210221020 its reverse (2012201211), we get a palindrome (13222422231).

The spelling of 11210221020 in words is "eleven billion, two hundred ten million, two hundred twenty-one thousand, twenty".