21033109962 has 48 divisors (see below), whose sum is σ = 47322861768. Its totient is φ = 6746319360.

The previous prime is 21033109961. The next prime is 21033109963. The reversal of 21033109962 is 26990133012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21033109961) and next prime (21033109963).

It can be written as a sum of positive squares in 4 ways, for example, as 11206551321 + 9826558641 = 105861^2 + 99129^2 .

It is not an unprimeable number, because it can be changed into a prime (21033109961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141333 + ... + 249080.

Almost surely, 2^21033109962 is an apocalyptic number.

21033109962 is an abundant number, since it is smaller than the sum of its proper divisors (26289751806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21033109962 is a wasteful number, since it uses less digits than its factorization.

21033109962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390535 (or 390532 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The spelling of 21033109962 in words is "twenty-one billion, thirty-three million, one hundred nine thousand, nine hundred sixty-two".