21121101332 has 12 divisors (see below), whose sum is σ = 36995938560. Its totient is φ = 10550833176.

The previous prime is 21121101317. The next prime is 21121101403. The reversal of 21121101332 is 23310112112.

It is a super-2 number, since 2×21121101332² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21121101332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2424482 + ... + 2433177.

It is an arithmetic number, because the mean of its divisors is an integer number (3082994880).

Almost surely, 2^21121101332 is an apocalyptic number.

It is an amenable number.

21121101332 is a deficient number, since it is larger than the sum of its proper divisors (15874837228).

21121101332 is a wasteful number, since it uses less digits than its factorization.

21121101332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858750 (or 4858748 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21121101332 its reverse (23310112112), we get a palindrome (44431213444).

The spelling of 21121101332 in words is "twenty-one billion, one hundred twenty-one million, one hundred one thousand, three hundred thirty-two".