21002340233131 has 8 divisors (see below), whose sum is σ = 21079085474304. Its totient is φ = 20925654054120.

The previous prime is 21002340233117. The next prime is 21002340233137. The reversal of 21002340233131 is 13133204320012.

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 21002340233131 - 2²³ = 21002331844523 is a prime.

It is a super-2 number, since 2×21002340233131² (a number of 27 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 = 21002340233096 and 21002340233105.

It is not an unprimeable number, because it can be changed into a prime (21002340233137) 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, 14052985 + ... + 15475498.

It is an arithmetic number, because the mean of its divisors is an integer number (2634885684288).

Almost surely, 2^{21002340233131} is an apocalyptic number.

21002340233131 is a deficient number, since it is larger than the sum of its proper divisors (76745241173).

21002340233131 is a wasteful number, since it uses less digits than its factorization.

21002340233131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29531081.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21002340233131 its reverse (13133204320012), we get a palindrome (34135544553143).

The spelling of 21002340233131 in words is "twenty-one trillion, two billion, three hundred forty million, two hundred thirty-three thousand, one hundred thirty-one".