126814221 has 8 divisors (see below), whose sum is σ = 187872960. Its totient is φ = 84542796.

The previous prime is 126814217. The next prime is 126814223. The reversal of 126814221 is 122418621.

It is not a de Polignac number, because 126814221 - 2² = 126814217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4696823 = 126814221 / (1 + 2 + 6 + 8 + 1 + 4 + 2 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126814223) 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, 2348385 + ... + 2348438.

It is an arithmetic number, because the mean of its divisors is an integer number (23484120).

Almost surely, 2^126814221 is an apocalyptic number.

It is an amenable number.

126814221 is a deficient number, since it is larger than the sum of its proper divisors (61058739).

126814221 is an equidigital number, since it uses as much as digits as its factorization.

126814221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696832 (or 4696826 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 126814221 is about 11261.1820427520. The cubic root of 126814221 is about 502.4073520437.

The spelling of 126814221 in words is "one hundred twenty-six million, eight hundred fourteen thousand, two hundred twenty-one".