2121301323031 has 16 divisors (see below), whose sum is σ = 2331480591648. Its totient is φ = 1914016345600.

The previous prime is 2121301323013. The next prime is 2121301323049. The reversal of 2121301323031 is 1303231031212.

It is an interprime number because it is at equal distance from previous prime (2121301323013) and next prime (2121301323049).

It is a cyclic number.

It is not a de Polignac number, because 2121301323031 - 2⁹ = 2121301322519 is a prime.

It is a super-2 number, since 2×2121301323031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121301322993 and 2121301323011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121301323091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7978371 + ... + 8239963.

It is an arithmetic number, because the mean of its divisors is an integer number (145717536978).

Almost surely, 2^{2121301323031} is an apocalyptic number.

2121301323031 is a deficient number, since it is larger than the sum of its proper divisors (210179268617).

2121301323031 is a wasteful number, since it uses less digits than its factorization.

2121301323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267122.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2121301323031 its reverse (1303231031212), we get a palindrome (3424532354243).

The spelling of 2121301323031 in words is "two trillion, one hundred twenty-one billion, three hundred one million, three hundred twenty-three thousand, thirty-one".