21333132121010 has 16 divisors (see below), whose sum is σ = 38972766741696. Its totient is φ = 8405890865328.

The previous prime is 21333132121009. The next prime is 21333132121031. The reversal of 21333132121010 is 1012123133312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15920247182 + ... + 15920248521.

It is an arithmetic number, because the mean of its divisors is an integer number (2435797921356).

Almost surely, 2^{21333132121010} is an apocalyptic number.

21333132121010 is a deficient number, since it is larger than the sum of its proper divisors (17639634620686).

21333132121010 is a wasteful number, since it uses less digits than its factorization.

21333132121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31840495777.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21333132121010 its reverse (1012123133312), we get a palindrome (22345255254322).

The spelling of 21333132121010 in words is "twenty-one trillion, three hundred thirty-three billion, one hundred thirty-two million, one hundred twenty-one thousand, ten".