21120332212131 has 32 divisors (see below), whose sum is σ = 29566782013440. Its totient is φ = 13392694461600.

The previous prime is 21120332212121. The next prime is 21120332212163. The reversal of 21120332212131 is 13121223302112.

It is not a de Polignac number, because 21120332212131 - 2¹⁸ = 21120331949987 is a prime.

It is a super-2 number, since 2×21120332212131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21120332212121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30843966 + ... + 31521276.

It is an arithmetic number, because the mean of its divisors is an integer number (923961937920).

Almost surely, 2^{21120332212131} is an apocalyptic number.

21120332212131 is a deficient number, since it is larger than the sum of its proper divisors (8446449801309).

21120332212131 is a wasteful number, since it uses less digits than its factorization.

21120332212131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683087.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21120332212131 its reverse (13121223302112), we get a palindrome (34241555514243).

The spelling of 21120332212131 in words is "twenty-one trillion, one hundred twenty billion, three hundred thirty-two million, two hundred twelve thousand, one hundred thirty-one".