621211112126 has 16 divisors (see below), whose sum is σ = 1030452308208. Its totient is φ = 278500622400.

The previous prime is 621211112077. The next prime is 621211112131.

It is a happy number.

621211112126 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 621211112095 and 621211112104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193401605 + ... + 193404816.

It is an arithmetic number, because the mean of its divisors is an integer number (64403269263).

Almost surely, 2^621211112126 is an apocalyptic number.

621211112126 is a deficient number, since it is larger than the sum of its proper divisors (409241196082).

621211112126 is a wasteful number, since it uses less digits than its factorization.

621211112126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386806507.

The product of its digits is 576, while the sum is 26.

It can be divided in two parts, 621211 and 112126, that added together give a palindrome (733337).

The spelling of 621211112126 in words is "six hundred twenty-one billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty-six".