21132143315066 has 64 divisors (see below), whose sum is σ = 38529832723200. Its totient is φ = 8490739728384.

The previous prime is 21132143314979. The next prime is 21132143315071. The reversal of 21132143315066 is 66051334123112.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344090570 + ... + 344151978.

It is an arithmetic number, because the mean of its divisors is an integer number (602028636300).

Almost surely, 2^{21132143315066} is an apocalyptic number.

21132143315066 is a deficient number, since it is larger than the sum of its proper divisors (17397689408134).

21132143315066 is a wasteful number, since it uses less digits than its factorization.

21132143315066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74871.

The product of its (nonzero) digits is 77760, while the sum is 38.

Adding to 21132143315066 its reverse (66051334123112), we get a palindrome (87183477438178).

The spelling of 21132143315066 in words is "twenty-one trillion, one hundred thirty-two billion, one hundred forty-three million, three hundred fifteen thousand, sixty-six".