126221130 has 48 divisors (see below), whose sum is σ = 375058944. Its totient is φ = 28850400.

The previous prime is 126221101. The next prime is 126221131. The reversal of 126221130 is 31122621.

126221130 is a `hidden beast` number, since 1 + 2 + 622 + 11 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (126221131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99546 + ... + 100805.

It is an arithmetic number, because the mean of its divisors is an integer number (7813728).

Almost surely, 2^126221130 is an apocalyptic number.

126221130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126221130 is an abundant number, since it is smaller than the sum of its proper divisors (248837814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126221130 is a wasteful number, since it uses less digits than its factorization.

126221130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200371 (or 200368 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 126221130 is about 11234.8177555312. The cubic root of 126221130 is about 501.6229000251.

Adding to 126221130 its reverse (31122621), we get a palindrome (157343751).

The spelling of 126221130 in words is "one hundred twenty-six million, two hundred twenty-one thousand, one hundred thirty".