101212110120001 has 4 divisors (see below), whose sum is σ = 101212133608404. Its totient is φ = 101212086631600.

The previous prime is 101212110119993. The next prime is 101212110120029. The reversal of 101212110120001 is 100021011212101.

It is a happy number.

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 52192172092225 + 49019938027776 = 7224415^2 + 7001424^2 .

It is a cyclic number.

It is not a de Polignac number, because 101212110120001 - 2³ = 101212110119993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101212110120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3216730 + ... + 14586691.

It is an arithmetic number, because the mean of its divisors is an integer number (25303033402101).

Almost surely, 2^{101212110120001} is an apocalyptic number.

It is an amenable number.

101212110120001 is a deficient number, since it is larger than the sum of its proper divisors (23488403).

101212110120001 is an equidigital number, since it uses as much as digits as its factorization.

101212110120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23488402.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101212110120001 its reverse (100021011212101), we get a palindrome (201233121332102).

The spelling of 101212110120001 in words is "one hundred one trillion, two hundred twelve billion, one hundred ten million, one hundred twenty thousand, one".