11051223420 has 48 divisors (see below), whose sum is σ = 30962927520. Its totient is φ = 2945135616.

The previous prime is 11051223409. The next prime is 11051223431. The reversal of 11051223420 is 2432215011.

It is an interprime number because it is at equal distance from previous prime (11051223409) and next prime (11051223431).

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, 39304 + ... + 153776.

It is an arithmetic number, because the mean of its divisors is an integer number (645060990).

Almost surely, 2^11051223420 is an apocalyptic number.

11051223420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11051223420 is an abundant number, since it is smaller than the sum of its proper divisors (19911704100).

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

11051223420 is a wasteful number, since it uses less digits than its factorization.

11051223420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116094 (or 116092 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 11051223420 its reverse (2432215011), we get a palindrome (13483438431).

The spelling of 11051223420 in words is "eleven billion, fifty-one million, two hundred twenty-three thousand, four hundred twenty".