21121334140633 has 8 divisors (see below), whose sum is σ = 21327162898496. Its totient is φ = 20915520138000.

The previous prime is 21121334140619. The next prime is 21121334140639. The reversal of 21121334140633 is 33604143312112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21121334140633 - 2⁵ = 21121334140601 is a prime.

It is a super-2 number, since 2×21121334140633² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21121334140639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801003 + ... + 6548608.

It is an arithmetic number, because the mean of its divisors is an integer number (2665895362312).

Almost surely, 2^{21121334140633} is an apocalyptic number.

It is an amenable number.

21121334140633 is a deficient number, since it is larger than the sum of its proper divisors (205828757863).

21121334140633 is a wasteful number, since it uses less digits than its factorization.

21121334140633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7377615.

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 21121334140633 its reverse (33604143312112), we get a palindrome (54725477452745).

The spelling of 21121334140633 in words is "twenty-one trillion, one hundred twenty-one billion, three hundred thirty-four million, one hundred forty thousand, six hundred thirty-three".