100001222221101 has 4 divisors (see below), whose sum is σ = 133334962961472. Its totient is φ = 66667481480732.

The previous prime is 100001222221051. The next prime is 100001222221111. The reversal of 100001222221101 is 101122222100001.

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 100001222221101 - 2²¹ = 100001220123949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001222221111) 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, 16666870370181 + ... + 16666870370186.

It is an arithmetic number, because the mean of its divisors is an integer number (33333740740368).

Almost surely, 2^{100001222221101} is an apocalyptic number.

It is an amenable number.

100001222221101 is a deficient number, since it is larger than the sum of its proper divisors (33333740740371).

100001222221101 is an equidigital number, since it uses as much as digits as its factorization.

100001222221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33333740740370.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100001222221101 its reverse (101122222100001), we get a palindrome (201123444321102).

The spelling of 100001222221101 in words is "one hundred trillion, one billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred one".