126541221 has 16 divisors (see below), whose sum is σ = 173736000. Its totient is φ = 81865728.

The previous prime is 126541201. The next prime is 126541223. The reversal of 126541221 is 122145621.

It is not a de Polignac number, because 126541221 - 2⁵ = 126541189 is a prime.

It is a super-2 number, since 2×126541221² = 32025361224341682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126541191 and 126541200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126541223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48570 + ... + 51108.

It is an arithmetic number, because the mean of its divisors is an integer number (10858500).

Almost surely, 2^126541221 is an apocalyptic number.

It is an amenable number.

126541221 is a deficient number, since it is larger than the sum of its proper divisors (47194779).

126541221 is a wasteful number, since it uses less digits than its factorization.

126541221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028.

The product of its digits is 960, while the sum is 24.

The square root of 126541221 is about 11249.0542269117. The cubic root of 126541221 is about 502.0465729821.

Adding to 126541221 its reverse (122145621), we get a palindrome (248686842).

It can be divided in two parts, 1265 and 41221, that added together give a triangular number (42486 = T₂₉₁).

The spelling of 126541221 in words is "one hundred twenty-six million, five hundred forty-one thousand, two hundred twenty-one".