21330212625662 has 16 divisors (see below), whose sum is σ = 32879398304400. Its totient is φ = 10370752507008.

The previous prime is 21330212625661. The next prime is 21330212625677. The reversal of 21330212625662 is 26652621203312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330212625661) 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, 84702443 + ... + 84953894.

It is an arithmetic number, because the mean of its divisors is an integer number (2054962394025).

Almost surely, 2^{21330212625662} is an apocalyptic number.

21330212625662 is a deficient number, since it is larger than the sum of its proper divisors (11549185678738).

21330212625662 is a wasteful number, since it uses less digits than its factorization.

21330212625662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169658075.

The product of its (nonzero) digits is 311040, while the sum is 41.

Adding to 21330212625662 its reverse (26652621203312), we get a palindrome (47982833828974).

The spelling of 21330212625662 in words is "twenty-one trillion, three hundred thirty billion, two hundred twelve million, six hundred twenty-five thousand, six hundred sixty-two".