21022022012 has 12 divisors (see below), whose sum is σ = 36894559800. Its totient is φ = 10480719216.

The previous prime is 21022021997. The next prime is 21022022029.

21022022012 is nontrivially palindromic in base 10.

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, 7571387 + ... + 7574162.

It is an arithmetic number, because the mean of its divisors is an integer number (3074546650).

Almost surely, 2^21022022012 is an apocalyptic number.

It is an amenable number.

21022022012 is a deficient number, since it is larger than the sum of its proper divisors (15872537788).

21022022012 is a wasteful number, since it uses less digits than its factorization.

21022022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15145900 (or 15145898 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

It can be divided in two parts, 210220 and 22012, that added together give a palindrome (232232).

The spelling of 21022022012 in words is "twenty-one billion, twenty-two million, twenty-two thousand, twelve".