621122226 has 16 divisors (see below), whose sum is σ = 1247081184. Its totient is φ = 206234624.

The previous prime is 621122213. The next prime is 621122233. The reversal of 621122226 is 622221126.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 621122196 and 621122205.

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, 199860 + ... + 202943.

It is an arithmetic number, because the mean of its divisors is an integer number (77942574).

Almost surely, 2^621122226 is an apocalyptic number.

621122226 is an abundant number, since it is smaller than the sum of its proper divisors (625958958).

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

621122226 is a wasteful number, since it uses less digits than its factorization.

621122226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403065.

The product of its digits is 1152, while the sum is 24.

The square root of 621122226 is about 24922.3238483092. The cubic root of 621122226 is about 853.2160636307.

The spelling of 621122226 in words is "six hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-six".