11222100020 has 24 divisors (see below), whose sum is σ = 23601455304. Its totient is φ = 4482164736.

The previous prime is 11222099971. The next prime is 11222100023. The reversal of 11222100020 is 2000122211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 898320784 + 10323779236 = 29972^2 + 101606^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11222099974 and 11222100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222100023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403409 + ... + 430328.

It is an arithmetic number, because the mean of its divisors is an integer number (983393971).

Almost surely, 2^11222100020 is an apocalyptic number.

11222100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222100020 is an abundant number, since it is smaller than the sum of its proper divisors (12379355284).

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

11222100020 is a wasteful number, since it uses less digits than its factorization.

11222100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834419 (or 834417 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 11222100020 its reverse (2000122211), we get a palindrome (13222222231).

The spelling of 11222100020 in words is "eleven billion, two hundred twenty-two million, one hundred thousand, twenty".