11121205950 has 72 divisors (see below), whose sum is σ = 30174928056. Its totient is φ = 2936280000.

The previous prime is 11121205903. The next prime is 11121205957. The reversal of 11121205950 is 5950212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121205957) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 76896 + ... + 167795.

It is an arithmetic number, because the mean of its divisors is an integer number (419096223).

Almost surely, 2^11121205950 is an apocalyptic number.

11121205950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11121205950 is an abundant number, since it is smaller than the sum of its proper divisors (19053722106).

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

11121205950 is a wasteful number, since it uses less digits than its factorization.

11121205950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244810 (or 244802 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 11121205950 in words is "eleven billion, one hundred twenty-one million, two hundred five thousand, nine hundred fifty".