2121016221383 has 8 divisors (see below), whose sum is σ = 2139143424000. Its totient is φ = 2102911304760.

The previous prime is 2121016221349. The next prime is 2121016221413. The reversal of 2121016221383 is 3831226101212.

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 2121016221383 - 2⁸ = 2121016221127 is a prime.

It is a super-2 number, since 2×2121016221383² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121016221083) 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, 5380313 + ... + 5761058.

It is an arithmetic number, because the mean of its divisors is an integer number (267392928000).

Almost surely, 2^{2121016221383} is an apocalyptic number.

2121016221383 is a deficient number, since it is larger than the sum of its proper divisors (18127202617).

2121016221383 is a wasteful number, since it uses less digits than its factorization.

2121016221383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11142997.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 2121016221383 in words is "two trillion, one hundred twenty-one billion, sixteen million, two hundred twenty-one thousand, three hundred eighty-three".