11215204250 has 32 divisors (see below), whose sum is σ = 21062515968. Its totient is φ = 4471626000.

The previous prime is 11215204243. The next prime is 11215204261. The reversal of 11215204250 is 5240251211.

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, 5627 + ... + 149873.

It is an arithmetic number, because the mean of its divisors is an integer number (658203624).

Almost surely, 2^11215204250 is an apocalyptic number.

11215204250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11215204250 is a deficient number, since it is larger than the sum of its proper divisors (9847311718).

11215204250 is a wasteful number, since it uses less digits than its factorization.

11215204250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144575 (or 144565 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 11215204250 its reverse (5240251211), we get a palindrome (16455455461).

The spelling of 11215204250 in words is "eleven billion, two hundred fifteen million, two hundred four thousand, two hundred fifty".