20100001221101 has 8 divisors (see below), whose sum is σ = 20225630219904. Its totient is φ = 19974400467840.

The previous prime is 20100001221059. The next prime is 20100001221121. The reversal of 20100001221101 is 10112210000102.

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 20100001221101 - 2⁴² = 15701954709997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100001221121) 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, 5632805 + ... + 8481066.

It is an arithmetic number, because the mean of its divisors is an integer number (2528203777488).

Almost surely, 2^{20100001221101} is an apocalyptic number.

It is an amenable number.

20100001221101 is a deficient number, since it is larger than the sum of its proper divisors (125628998803).

20100001221101 is a wasteful number, since it uses less digits than its factorization.

20100001221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14122771.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20100001221101 its reverse (10112210000102), we get a palindrome (30212211221203).

The spelling of 20100001221101 in words is "twenty trillion, one hundred billion, one million, two hundred twenty-one thousand, one hundred one".