12211948 has 24 divisors (see below), whose sum is σ = 24498432. Its totient is φ = 5217744.

The previous prime is 12211943. The next prime is 12211949. The reversal of 12211948 is 84911221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (12211943) 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, 16065 + ... + 16807.

It is an arithmetic number, because the mean of its divisors is an integer number (1020768).

Almost surely, 2^12211948 is an apocalyptic number.

It is an amenable number.

12211948 is an abundant number, since it is smaller than the sum of its proper divisors (12286484).

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

12211948 is a wasteful number, since it uses less digits than its factorization.

12211948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1339 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 12211948 is about 3494.5597719885. The cubic root of 12211948 is about 230.2828781571.

The spelling of 12211948 in words is "twelve million, two hundred eleven thousand, nine hundred forty-eight".