21022002012012 has 24 divisors (see below), whose sum is σ = 49059942176112. Its totient is φ = 7006104840000.

The previous prime is 21022002011939. The next prime is 21022002012029. The reversal of 21022002012012 is 21021020022012.

It is a junction number, because it is equal to n+sod(n) for n = 21022002011982 and 21022002012000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153574239 + ... + 153711062.

It is an arithmetic number, because the mean of its divisors is an integer number (2044164257338).

Almost surely, 2^{21022002012012} is an apocalyptic number.

It is an amenable number.

21022002012012 is an abundant number, since it is smaller than the sum of its proper divisors (28037940164100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21022002012012 is a wasteful number, since it uses less digits than its factorization.

21022002012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307291009 (or 307291007 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21022002012012 its reverse (21021020022012), we get a palindrome (42043022034024).

The spelling of 21022002012012 in words is "twenty-one trillion, twenty-two billion, two million, twelve thousand, twelve".