2121001002023 has 8 divisors (see below), whose sum is σ = 2203804784880. Its totient is φ = 2038841607040.

The previous prime is 2121001002013. The next prime is 2121001002047. The reversal of 2121001002023 is 3202001001212.

It is a happy number.

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 2121001002023 - 2¹⁴ = 2121000985639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121001001989 and 2121001002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121001002013) 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, 161090258 + ... + 161103423.

It is an arithmetic number, because the mean of its divisors is an integer number (275475598110).

Almost surely, 2^{2121001002023} is an apocalyptic number.

2121001002023 is a deficient number, since it is larger than the sum of its proper divisors (82803782857).

2121001002023 is a wasteful number, since it uses less digits than its factorization.

2121001002023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322193937.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2121001002023 its reverse (3202001001212), we get a palindrome (5323002003235).

The spelling of 2121001002023 in words is "two trillion, one hundred twenty-one billion, one million, two thousand, twenty-three".