21152503330 has 32 divisors (see below), whose sum is σ = 43936199424. Its totient is φ = 7181873856.

The previous prime is 21152503301. The next prime is 21152503349. The reversal of 21152503330 is 3330525112.

It is a super-2 number, since 2×21152503330² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21152503295 and 21152503304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459677 + ... + 1474096.

It is an arithmetic number, because the mean of its divisors is an integer number (1373006232).

Almost surely, 2^21152503330 is an apocalyptic number.

21152503330 is an abundant number, since it is smaller than the sum of its proper divisors (22783696094).

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

21152503330 is a wasteful number, since it uses less digits than its factorization.

21152503330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933890.

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 21152503330 in words is "twenty-one billion, one hundred fifty-two million, five hundred three thousand, three hundred thirty".