20101000112101 has 4 divisors (see below), whose sum is σ = 20131410097804. Its totient is φ = 20070590126400.

The previous prime is 20101000112093. The next prime is 20101000112107. The reversal of 20101000112101 is 10121100010102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17797860000001 + 2303140112100 = 4218751^2 + 1517610^2 .

It is a cyclic number.

It is not a de Polignac number, because 20101000112101 - 2³ = 20101000112093 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 (20101000112107) 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, 15204991860 + ... + 15204993181.

It is an arithmetic number, because the mean of its divisors is an integer number (5032852524451).

Almost surely, 2^{20101000112101} is an apocalyptic number.

It is an amenable number.

20101000112101 is a deficient number, since it is larger than the sum of its proper divisors (30409985703).

20101000112101 is an equidigital number, since it uses as much as digits as its factorization.

20101000112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30409985702.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20101000112101 its reverse (10121100010102), we get a palindrome (30222100122203).

The spelling of 20101000112101 in words is "twenty trillion, one hundred one billion, one hundred twelve thousand, one hundred one".