21221534433062 has 48 divisors (see below), whose sum is σ = 35612486460432. Its totient is φ = 9450249937920.

The previous prime is 21221534433053. The next prime is 21221534433067. The reversal of 21221534433062 is 26033443512212.

It is a super-2 number, since 2×21221534433062² (a number of 27 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221534433067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9832133 + ... + 11794655.

It is an arithmetic number, because the mean of its divisors is an integer number (741926801259).

Almost surely, 2^{21221534433062} is an apocalyptic number.

21221534433062 is a deficient number, since it is larger than the sum of its proper divisors (14390952027370).

21221534433062 is a wasteful number, since it uses less digits than its factorization.

21221534433062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963461 (or 1963442 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 21221534433062 its reverse (26033443512212), we get a palindrome (47254977945274).

The spelling of 21221534433062 in words is "twenty-one trillion, two hundred twenty-one billion, five hundred thirty-four million, four hundred thirty-three thousand, sixty-two".