121210011211001 has 8 divisors (see below), whose sum is σ = 122466755675208. Its totient is φ = 119954377440000.

The previous prime is 121210011210961. The next prime is 121210011211013. The reversal of 121210011211001 is 100112110012121.

It can be written as a sum of positive squares in 4 ways, for example, as 35702059014400 + 85507952196601 = 5975120^2 + 9247051^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 121210011211001 - 2²² = 121210007016697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121210011201001) 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, 277453910 + ... + 277890431.

It is an arithmetic number, because the mean of its divisors is an integer number (15308344459401).

Almost surely, 2^{121210011211001} is an apocalyptic number.

It is an amenable number.

121210011211001 is a deficient number, since it is larger than the sum of its proper divisors (1256744464207).

121210011211001 is a wasteful number, since it uses less digits than its factorization.

121210011211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555346603.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121210011211001 its reverse (100112110012121), we get a palindrome (221322121223122).

The spelling of 121210011211001 in words is "one hundred twenty-one trillion, two hundred ten billion, eleven million, two hundred eleven thousand, one".