100011222110021 has 8 divisors (see below), whose sum is σ = 100144552097784. Its totient is φ = 99877895328960.

The previous prime is 100011222110017. The next prime is 100011222110077. The reversal of 100011222110021 is 120011222110001.

It can be written as a sum of positive squares in 4 ways, for example, as 58378982296996 + 41632239813025 = 7640614^2 + 6452305^2 .

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 100011222110021 - 2² = 100011222110017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100011222109978 and 100011222110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100011222110621) 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, 65238311 + ... + 66753723.

It is an arithmetic number, because the mean of its divisors is an integer number (12518069012223).

Almost surely, 2^{100011222110021} is an apocalyptic number.

It is an amenable number.

100011222110021 is a deficient number, since it is larger than the sum of its proper divisors (133329987763).

100011222110021 is an equidigital number, since it uses as much as digits as its factorization.

100011222110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603351.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100011222110021 its reverse (120011222110001), we get a palindrome (220022444220022).

The spelling of 100011222110021 in words is "one hundred trillion, eleven billion, two hundred twenty-two million, one hundred ten thousand, twenty-one".