20121001102101 has 4 divisors (see below), whose sum is σ = 26828001469472. Its totient is φ = 13414000734732.

The previous prime is 20121001102099. The next prime is 20121001102117. The reversal of 20121001102101 is 10120110012102.

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 not a de Polignac number, because 20121001102101 - 2¹ = 20121001102099 is a prime.

It is a super-2 number, since 2×20121001102101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121001103101) 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, 3353500183681 + ... + 3353500183686.

It is an arithmetic number, because the mean of its divisors is an integer number (6707000367368).

Almost surely, 2^{20121001102101} is an apocalyptic number.

It is an amenable number.

20121001102101 is a deficient number, since it is larger than the sum of its proper divisors (6707000367371).

20121001102101 is an equidigital number, since it uses as much as digits as its factorization.

20121001102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707000367370.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20121001102101 its reverse (10120110012102), we get a palindrome (30241111114203).

The spelling of 20121001102101 in words is "twenty trillion, one hundred twenty-one billion, one million, one hundred two thousand, one hundred one".