21022002001012 has 24 divisors (see below), whose sum is σ = 38724931007840. Its totient is φ = 9957741441120.

The previous prime is 21022002000959. The next prime is 21022002001103. The reversal of 21022002001012 is 21010020022012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21022002000983 and 21022002001001.

It is a congruent number.

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, 18352687 + ... + 19464457.

Almost surely, 2^{21022002001012} is an apocalyptic number.

It is an amenable number.

21022002001012 is a deficient number, since it is larger than the sum of its proper divisors (17702929006828).

21022002001012 is a wasteful number, since it uses less digits than its factorization.

21022002001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360591 (or 1360589 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21022002001012 its reverse (21010020022012), we get a palindrome (42032022023024).

The spelling of 21022002001012 in words is "twenty-one trillion, twenty-two billion, two million, one thousand, twelve".