134001221 has 4 divisors (see below), whose sum is σ = 135230700. Its totient is φ = 132771744.

The previous prime is 134001169. The next prime is 134001233. The reversal of 134001221 is 122100431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122100431 = 373 ⋅327347.

It can be written as a sum of positive squares in 2 ways, for example, as 34281025 + 99720196 = 5855^2 + 9986^2 .

It is a cyclic number.

It is not a de Polignac number, because 134001221 - 2¹⁸ = 133739077 is a prime.

It is a Duffinian number.

134001221 is a modest number, since divided by 1221 gives 134 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 134001196 and 134001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134001121) 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, 614576 + ... + 614793.

It is an arithmetic number, because the mean of its divisors is an integer number (33807675).

Almost surely, 2^134001221 is an apocalyptic number.

It is an amenable number.

134001221 is a deficient number, since it is larger than the sum of its proper divisors (1229479).

134001221 is a wasteful number, since it uses less digits than its factorization.

134001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229478.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 134001221 is about 11575.8896418375. The cubic root of 134001221 is about 511.7245489496.

Adding to 134001221 its reverse (122100431), we get a palindrome (256101652).

The spelling of 134001221 in words is "one hundred thirty-four million, one thousand, two hundred twenty-one".