101212011210009 has 16 divisors (see below), whose sum is σ = 154339505018240. Its totient is φ = 57793555572480.

The previous prime is 101212011209887. The next prime is 101212011210017. The reversal of 101212011210009 is 900012110212101.

It is not a de Polignac number, because 101212011210009 - 2²⁰ = 101212010161433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101212011210509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1744945504 + ... + 1745003505.

It is an arithmetic number, because the mean of its divisors is an integer number (9646219063640).

Almost surely, 2^{101212011210009} is an apocalyptic number.

It is an amenable number.

101212011210009 is a deficient number, since it is larger than the sum of its proper divisors (53127493808231).

101212011210009 is a wasteful number, since it uses less digits than its factorization.

101212011210009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489950400.

The product of its (nonzero) digits is 72, while the sum is 21.

It can be divided in two parts, 1012 and 12011210009, that added together give a palindrome (12011211021).

The spelling of 101212011210009 in words is "one hundred one trillion, two hundred twelve billion, eleven million, two hundred ten thousand, nine".