101212121001 has 16 divisors (see below), whose sum is σ = 139761911808. Its totient is φ = 65108979600.

The previous prime is 101212120991. The next prime is 101212121029. The reversal of 101212121001 is 100121212101.

It is not a de Polignac number, because 101212121001 - 2⁵ = 101212120969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101212121401) 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, 5045035 + ... + 5065056.

It is an arithmetic number, because the mean of its divisors is an integer number (8735119488).

Almost surely, 2^101212121001 is an apocalyptic number.

It is an amenable number.

101212121001 is a deficient number, since it is larger than the sum of its proper divisors (38549790807).

101212121001 is a wasteful number, since it uses less digits than its factorization.

101212121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10110212.

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

Adding to 101212121001 its reverse (100121212101), we get a palindrome (201333333102).

It can be divided in two parts, 10121212100 and 1, that added together give a palindrome (10121212101).

The spelling of 101212121001 in words is "one hundred one billion, two hundred twelve million, one hundred twenty-one thousand, one".