121021012001 has 8 divisors (see below), whose sum is σ = 121135506408. Its totient is φ = 120906576000.

The previous prime is 121021011953. The next prime is 121021012009. The reversal of 121021012001 is 100210120121.

It can be written as a sum of positive squares in 4 ways, for example, as 45505422400 + 75515589601 = 213320^2 + 274801^2 .

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 121021012001 - 2¹⁰ = 121021010977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121021012009) 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, 4871231 + ... + 4896011.

It is an arithmetic number, because the mean of its divisors is an integer number (15141938301).

Almost surely, 2^121021012001 is an apocalyptic number.

It is an amenable number.

121021012001 is a deficient number, since it is larger than the sum of its proper divisors (114494407).

121021012001 is a wasteful number, since it uses less digits than its factorization.

121021012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29203.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121021012001 its reverse (100210120121), we get a palindrome (221231132122).

The spelling of 121021012001 in words is "one hundred twenty-one billion, twenty-one million, twelve thousand, one".