21120130203231 has 8 divisors (see below), whose sum is σ = 28169755165440. Its totient is φ = 14075296021592.

The previous prime is 21120130203217. The next prime is 21120130203241. The reversal of 21120130203231 is 13230203102112.

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 21120130203231 - 2¹⁹ = 21120129678943 is a prime.

It is a super-2 number, since 2×21120130203231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21120130203198 and 21120130203207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120130203241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1197684855 + ... + 1197702488.

It is an arithmetic number, because the mean of its divisors is an integer number (3521219395680).

Almost surely, 2^{21120130203231} is an apocalyptic number.

21120130203231 is a deficient number, since it is larger than the sum of its proper divisors (7049624962209).

21120130203231 is a wasteful number, since it uses less digits than its factorization.

21120130203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395390285.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21120130203231 its reverse (13230203102112), we get a palindrome (34350333305343).

The spelling of 21120130203231 in words is "twenty-one trillion, one hundred twenty billion, one hundred thirty million, two hundred three thousand, two hundred thirty-one".