11020212420 has 192 divisors, whose sum is σ = 37730918400. Its totient is φ = 2347107840.

The previous prime is 11020212337. The next prime is 11020212443. The reversal of 11020212420 is 2421202011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11020212420.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 475461 + ... + 498099.

It is an arithmetic number, because the mean of its divisors is an integer number (196515200).

Almost surely, 2^11020212420 is an apocalyptic number.

11020212420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11020212420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18865459200).

11020212420 is an abundant number, since it is smaller than the sum of its proper divisors (26710705980).

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

11020212420 is a wasteful number, since it uses less digits than its factorization.

11020212420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22738 (or 22736 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 11020212420 its reverse (2421202011), we get a palindrome (13441414431).

The spelling of 11020212420 in words is "eleven billion, twenty million, two hundred twelve thousand, four hundred twenty".