136221052 has 24 divisors (see below), whose sum is σ = 264326832. Its totient is φ = 60902400.

The previous prime is 136221049. The next prime is 136221053. The reversal of 136221052 is 250122631.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136221053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22693 + ... + 28060.

It is an arithmetic number, because the mean of its divisors is an integer number (11013618).

Almost surely, 2^136221052 is an apocalyptic number.

It is an amenable number.

136221052 is a deficient number, since it is larger than the sum of its proper divisors (128105780).

136221052 is a wasteful number, since it uses less digits than its factorization.

136221052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50829 (or 50827 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 136221052 is about 11671.3774679769. The cubic root of 136221052 is about 514.5347883607.

Adding to 136221052 its reverse (250122631), we get a palindrome (386343683).

The spelling of 136221052 in words is "one hundred thirty-six million, two hundred twenty-one thousand, fifty-two".