21541140113200 has 60 divisors (see below), whose sum is σ = 51851542950808. Its totient is φ = 8599980902400.

The previous prime is 21541140113189. The next prime is 21541140113237. The reversal of 21541140113200 is 231104114512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 51275361 + ... + 51693760.

Almost surely, 2^{21541140113200} is an apocalyptic number.

21541140113200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21541140113200 is an abundant number, since it is smaller than the sum of its proper divisors (30310402837608).

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

21541140113200 is a wasteful number, since it uses less digits than its factorization.

21541140113200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102969662 (or 102969651 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 21541140113200 its reverse (231104114512), we get a palindrome (21772244227712).

The spelling of 21541140113200 in words is "twenty-one trillion, five hundred forty-one billion, one hundred forty million, one hundred thirteen thousand, two hundred".