121021212001 has 8 divisors (see below), whose sum is σ = 122731444224. Its totient is φ = 119322194880.

The previous prime is 121021211917. The next prime is 121021212019. The reversal of 121021212001 is 100212120121.

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 121021212001 - 2⁹ = 121021211489 is a prime.

It is a super-2 number, since 2×121021212001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121021212031) 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, 2782041 + ... + 2825206.

It is an arithmetic number, because the mean of its divisors is an integer number (15341430528).

Almost surely, 2^121021212001 is an apocalyptic number.

It is an amenable number.

121021212001 is a deficient number, since it is larger than the sum of its proper divisors (1710232223).

121021212001 is a wasteful number, since it uses less digits than its factorization.

121021212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5607551.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121021212001 its reverse (100212120121), we get a palindrome (221233332122).

The spelling of 121021212001 in words is "one hundred twenty-one billion, twenty-one million, two hundred twelve thousand, one".