136221419 has 4 divisors (see below), whose sum is σ = 136564944. Its totient is φ = 135877896.

The previous prime is 136221413. The next prime is 136221451. The reversal of 136221419 is 914122631.

136221419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 914122631 = 103 ⋅8874977.

It is a cyclic number.

It is not a de Polignac number, because 136221419 - 2⁴ = 136221403 is a prime.

It is a super-3 number, since 3×136221419³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136221391 and 136221400.

It is not an unprimeable number, because it can be changed into a prime (136221413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171167 + ... + 171960.

It is an arithmetic number, because the mean of its divisors is an integer number (34141236).

Almost surely, 2^136221419 is an apocalyptic number.

136221419 is a deficient number, since it is larger than the sum of its proper divisors (343525).

136221419 is an equidigital number, since it uses as much as digits as its factorization.

136221419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343524.

The product of its digits is 2592, while the sum is 29.

The square root of 136221419 is about 11671.3931901894. The cubic root of 136221419 is about 514.5352504383.

The spelling of 136221419 in words is "one hundred thirty-six million, two hundred twenty-one thousand, four hundred nineteen".