2101220626 has 8 divisors (see below), whose sum is σ = 3155197500. Its totient is φ = 1049488128.

The previous prime is 2101220623. The next prime is 2101220629. The reversal of 2101220626 is 6260221012.

It is an interprime number because it is at equal distance from previous prime (2101220623) and next prime (2101220629).

It can be written as a sum of positive squares in 2 ways, for example, as 1524980601 + 576240025 = 39051^2 + 24005^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2101220597 and 2101220606.

It is not an unprimeable number, because it can be changed into a prime (2101220623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558751 + ... + 562498.

Almost surely, 2^2101220626 is an apocalyptic number.

2101220626 is a deficient number, since it is larger than the sum of its proper divisors (1053976874).

2101220626 is a wasteful number, since it uses less digits than its factorization.

2101220626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122188.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2101220626 is about 45839.0731363539. The cubic root of 2101220626 is about 1280.8272293477.

Adding to 2101220626 its reverse (6260221012), we get a palindrome (8361441638).

The spelling of 2101220626 in words is "two billion, one hundred one million, two hundred twenty thousand, six hundred twenty-six".