21152311503050 has 48 divisors (see below), whose sum is σ = 48422522343552. Its totient is φ = 6694357924800.

The previous prime is 21152311503017. The next prime is 21152311503053. The reversal of 21152311503050 is 5030511325112.

It is a super-2 number, since 2×21152311503050² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21152311503053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2324425286 + ... + 2324434385.

It is an arithmetic number, because the mean of its divisors is an integer number (1008802548824).

Almost surely, 2^{21152311503050} is an apocalyptic number.

21152311503050 is an abundant number, since it is smaller than the sum of its proper divisors (27270210840502).

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

21152311503050 is a wasteful number, since it uses less digits than its factorization.

21152311503050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648859703 (or 4648859698 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 21152311503050 its reverse (5030511325112), we get a palindrome (26182822828162).

The spelling of 21152311503050 in words is "twenty-one trillion, one hundred fifty-two billion, three hundred eleven million, five hundred three thousand, fifty".