11520213400 has 96 divisors (see below), whose sum is σ = 27160650000. Its totient is φ = 4543672320.

The previous prime is 11520213391. The next prime is 11520213409. The reversal of 11520213400 is 431202511.

It is an interprime number because it is at equal distance from previous prime (11520213391) and next prime (11520213409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520213409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8881552 + ... + 8882848.

Almost surely, 2^11520213400 is an apocalyptic number.

11520213400 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 11520213400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13580325000).

11520213400 is an abundant number, since it is smaller than the sum of its proper divisors (15640436600).

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

11520213400 is a wasteful number, since it uses less digits than its factorization.

11520213400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 11520213400 its reverse (431202511), we get a palindrome (11951415911).

The spelling of 11520213400 in words is "eleven billion, five hundred twenty million, two hundred thirteen thousand, four hundred".