21232211662 has 8 divisors (see below), whose sum is σ = 31851070776. Its totient is φ = 10615188072.

The previous prime is 21232211633. The next prime is 21232211677. The reversal of 21232211662 is 26611223212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21232211662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429588 + ... + 476455.

It is an arithmetic number, because the mean of its divisors is an integer number (3981383847).

Almost surely, 2^21232211662 is an apocalyptic number.

21232211662 is a deficient number, since it is larger than the sum of its proper divisors (10618859114).

21232211662 is a wasteful number, since it uses less digits than its factorization.

21232211662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917762.

The product of its digits is 3456, while the sum is 28.

Adding to 21232211662 its reverse (26611223212), we get a palindrome (47843434874).

The spelling of 21232211662 in words is "twenty-one billion, two hundred thirty-two million, two hundred eleven thousand, six hundred sixty-two".