2121120201001 has 8 divisors (see below), whose sum is σ = 2122071980544. Its totient is φ = 2120168643840.

The previous prime is 2121120200911. The next prime is 2121120201019. The reversal of 2121120201001 is 1001020211212.

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 2121120201001 - 2³⁹ = 1571364387113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121120202001) 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, 20729796 + ... + 20831866.

It is an arithmetic number, because the mean of its divisors is an integer number (265258997568).

Almost surely, 2^{2121120201001} is an apocalyptic number.

It is an amenable number.

2121120201001 is a deficient number, since it is larger than the sum of its proper divisors (951779543).

2121120201001 is a wasteful number, since it uses less digits than its factorization.

2121120201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111191.

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

Adding to 2121120201001 its reverse (1001020211212), we get a palindrome (3122140412213).

The spelling of 2121120201001 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, two hundred one thousand, one".