2106222631 has 8 divisors (see below), whose sum is σ = 2202703200. Its totient is φ = 2010150912.

The previous prime is 2106222617. The next prime is 2106222641. The reversal of 2106222631 is 1362226012.

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 2106222631 - 2¹⁵ = 2106189863 is a prime.

It is a super-2 number, since 2×2106222631² = 8872347542673124322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2106222596 and 2106222605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106222611) 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, 91650 + ... + 112303.

It is an arithmetic number, because the mean of its divisors is an integer number (275337900).

Almost surely, 2^2106222631 is an apocalyptic number.

2106222631 is a deficient number, since it is larger than the sum of its proper divisors (96480569).

2106222631 is a wasteful number, since it uses less digits than its factorization.

2106222631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204425.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2106222631 is about 45893.6011988600. The cubic root of 2106222631 is about 1281.8427703573.

Adding to 2106222631 its reverse (1362226012), we get a palindrome (3468448643).

The spelling of 2106222631 in words is "two billion, one hundred six million, two hundred twenty-two thousand, six hundred thirty-one".