126213101 has 8 divisors (see below), whose sum is σ = 144777984. Its totient is φ = 107781840.

The previous prime is 126213097. The next prime is 126213103. The reversal of 126213101 is 101312621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126213101 - 2² = 126213097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126213101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126213103) 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, 31370 + ... + 35163.

It is an arithmetic number, because the mean of its divisors is an integer number (18097248).

Almost surely, 2^126213101 is an apocalyptic number.

It is an amenable number.

126213101 is a deficient number, since it is larger than the sum of its proper divisors (18564883).

126213101 is an equidigital number, since it uses as much as digits as its factorization.

126213101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66811.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 126213101 is about 11234.4604231801. The cubic root of 126213101 is about 501.6122636241.

Adding to 126213101 its reverse (101312621), we get a palindrome (227525722).

The spelling of 126213101 in words is "one hundred twenty-six million, two hundred thirteen thousand, one hundred one".