10212100111001 has 4 divisors (see below), whose sum is σ = 10212261765732. Its totient is φ = 10211938456272.

The previous prime is 10212100110991. The next prime is 10212100111007. The reversal of 10212100111001 is 10011100121201.

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 9140336843401 + 1071763267600 = 3023299^2 + 1035260^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212100111001 - 2²² = 10212095916697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10212100111007) 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, 80732570 + ... + 80858963.

It is an arithmetic number, because the mean of its divisors is an integer number (2553065441433).

Almost surely, 2^{10212100111001} is an apocalyptic number.

It is an amenable number.

10212100111001 is a deficient number, since it is larger than the sum of its proper divisors (161654731).

10212100111001 is an equidigital number, since it uses as much as digits as its factorization.

10212100111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161654730.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10212100111001 its reverse (10011100121201), we get a palindrome (20223200232202).

The spelling of 10212100111001 in words is "ten trillion, two hundred twelve billion, one hundred million, one hundred eleven thousand, one".