100110220121021 has 4 divisors (see below), whose sum is σ = 109211149222944. Its totient is φ = 91009291019100.

The previous prime is 100110220121017. The next prime is 100110220121033. The reversal of 100110220121021 is 120121022011001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100110220121021 - 2² = 100110220121017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100110220120987 and 100110220121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100110220121321) 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, 4550464550945 + ... + 4550464550966.

It is an arithmetic number, because the mean of its divisors is an integer number (27302787305736).

Almost surely, 2^{100110220121021} is an apocalyptic number.

100110220121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100110220121021 is a deficient number, since it is larger than the sum of its proper divisors (9100929101923).

100110220121021 is an equidigital number, since it uses as much as digits as its factorization.

100110220121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9100929101922.

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

Adding to 100110220121021 its reverse (120121022011001), we get a palindrome (220231242132022).

The spelling of 100110220121021 in words is "one hundred trillion, one hundred ten billion, two hundred twenty million, one hundred twenty-one thousand, twenty-one".