11145021252 has 24 divisors (see below), whose sum is σ = 26361285216. Its totient is φ = 3664116288.

The previous prime is 11145021247. The next prime is 11145021257. The reversal of 11145021252 is 25212054111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11145021247) and next prime (11145021257).

It is a super-2 number, since 2×11145021252² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11145021257) 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, 6360438 + ... + 6362189.

It is an arithmetic number, because the mean of its divisors is an integer number (1098386884).

Almost surely, 2^11145021252 is an apocalyptic number.

11145021252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11145021252 is an abundant number, since it is smaller than the sum of its proper divisors (15216263964).

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

11145021252 is a wasteful number, since it uses less digits than its factorization.

11145021252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12722707 (or 12722705 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 11145021252 its reverse (25212054111), we get a palindrome (36357075363).

The spelling of 11145021252 in words is "eleven billion, one hundred forty-five million, twenty-one thousand, two hundred fifty-two".