621121106 has 16 divisors (see below), whose sum is σ = 944706048. Its totient is φ = 306244800.

The previous prime is 621121069. The next prime is 621121133. The reversal of 621121106 is 601121126.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43391 + ... + 55901.

It is an arithmetic number, because the mean of its divisors is an integer number (59044128).

Almost surely, 2^621121106 is an apocalyptic number.

621121106 is a deficient number, since it is larger than the sum of its proper divisors (323584942).

621121106 is a wasteful number, since it uses less digits than its factorization.

621121106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12857.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 621121106 is about 24922.3013784843. The cubic root of 621121106 is about 853.2155507942.

Adding to 621121106 its sum of digits (20), we get a palindrome (621121126).

The spelling of 621121106 in words is "six hundred twenty-one million, one hundred twenty-one thousand, one hundred six".