21111042332 has 6 divisors (see below), whose sum is σ = 36944324088. Its totient is φ = 10555521164.

The previous prime is 21111042331. The next prime is 21111042341. The reversal of 21111042332 is 23324011112.

It is a super-2 number, since 2×21111042332² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111042331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2638880288 + ... + 2638880295.

It is an arithmetic number, because the mean of its divisors is an integer number (6157387348).

Almost surely, 2^21111042332 is an apocalyptic number.

It is an amenable number.

21111042332 is a deficient number, since it is larger than the sum of its proper divisors (15833281756).

21111042332 is a wasteful number, since it uses less digits than its factorization.

21111042332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277760587 (or 5277760585 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21111042332 its reverse (23324011112), we get a palindrome (44435053444).

The spelling of 21111042332 in words is "twenty-one billion, one hundred eleven million, forty-two thousand, three hundred thirty-two".