21533152353200 has 60 divisors (see below), whose sum is σ = 51757677160488. Its totient is φ = 8609218713600.

The previous prime is 21533152353191. The next prime is 21533152353233. The reversal of 21533152353200 is 235325133512.

It is a super-2 number, since 2×21533152353200² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11778497 + ... + 13483296.

Almost surely, 2^{21533152353200} is an apocalyptic number.

21533152353200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21533152353200 is an abundant number, since it is smaller than the sum of its proper divisors (30224524807288).

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

21533152353200 is a wasteful number, since it uses less digits than its factorization.

21533152353200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25263942 (or 25263931 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 35.

Adding to 21533152353200 its reverse (235325133512), we get a palindrome (21768477486712).

The spelling of 21533152353200 in words is "twenty-one trillion, five hundred thirty-three billion, one hundred fifty-two million, three hundred fifty-three thousand, two hundred".