2121201201023 has 8 divisors (see below), whose sum is σ = 2137928120160. Its totient is φ = 2104509535200.

The previous prime is 2121201201017. The next prime is 2121201201059. The reversal of 2121201201023 is 3201021021212.

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 2121201201023 - 2¹² = 2121201196927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121201200992 and 2121201201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111201201023) 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, 8692508 + ... + 8933201.

It is an arithmetic number, because the mean of its divisors is an integer number (267241015020).

Almost surely, 2^{2121201201023} is an apocalyptic number.

2121201201023 is a deficient number, since it is larger than the sum of its proper divisors (16726919137).

2121201201023 is a wasteful number, since it uses less digits than its factorization.

2121201201023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17626657.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2121201201023 its reverse (3201021021212), we get a palindrome (5322222222235).

The spelling of 2121201201023 in words is "two trillion, one hundred twenty-one billion, two hundred one million, two hundred one thousand, twenty-three".