21131033313034 has 16 divisors (see below), whose sum is σ = 31819519866600. Its totient is φ = 10524539379904.

The previous prime is 21131033313029. The next prime is 21131033313073. The reversal of 21131033313034 is 43031333013112.

It can be written as a sum of positive squares in 4 ways, for example, as 16066845672409 + 5064187640625 = 4008347^2 + 2250375^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21131033312993 and 21131033313011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164952 + ... + 6503020.

Almost surely, 2^{21131033313034} is an apocalyptic number.

21131033313034 is a deficient number, since it is larger than the sum of its proper divisors (10688486553566).

21131033313034 is a wasteful number, since it uses less digits than its factorization.

21131033313034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6344537.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 21131033313034 its reverse (43031333013112), we get a palindrome (64162366326146).

The spelling of 21131033313034 in words is "twenty-one trillion, one hundred thirty-one billion, thirty-three million, three hundred thirteen thousand, thirty-four".