21032123213031 has 32 divisors (see below), whose sum is σ = 33443103080448. Its totient is φ = 11495571114720.

The previous prime is 21032123212967. The next prime is 21032123213033. The reversal of 21032123213031 is 13031232123012.

It is not a de Polignac number, because 21032123213031 - 2⁶ = 21032123212967 is a prime.

It is a super-2 number, since 2×21032123213031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21032123212992 and 21032123213010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032123213033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23196586 + ... + 24086216.

It is an arithmetic number, because the mean of its divisors is an integer number (1045096971264).

Almost surely, 2^{21032123213031} is an apocalyptic number.

21032123213031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21032123213031 is a deficient number, since it is larger than the sum of its proper divisors (12410979867417).

21032123213031 is a wasteful number, since it uses less digits than its factorization.

21032123213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938611.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21032123213031 its reverse (13031232123012), we get a palindrome (34063355336043).

The spelling of 21032123213031 in words is "twenty-one trillion, thirty-two billion, one hundred twenty-three million, two hundred thirteen thousand, thirty-one".