121212101001 has 8 divisors (see below), whose sum is σ = 161706480640. Its totient is φ = 80762894352.

The previous prime is 121212100949. The next prime is 121212101011. The reversal of 121212101001 is 100101212121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121212101001 - 2²⁵ = 121178546569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121212101011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11286985 + ... + 11297718.

It is an arithmetic number, because the mean of its divisors is an integer number (20213310080).

Almost surely, 2^121212101001 is an apocalyptic number.

It is an amenable number.

121212101001 is a deficient number, since it is larger than the sum of its proper divisors (40494379639).

121212101001 is a wasteful number, since it uses less digits than its factorization.

121212101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22586495.

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

Adding to 121212101001 its reverse (100101212121), we get a palindrome (221313313122).

The spelling of 121212101001 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred one thousand, one".