21220201000012 has 24 divisors (see below), whose sum is σ = 42447152853504. Its totient is φ = 9092925245712.

The previous prime is 21220201000003. The next prime is 21220201000057. The reversal of 21220201000012 is 21000010202212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21220200999956 and 21220201000001.

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, 60096298 + ... + 60448369.

It is an arithmetic number, because the mean of its divisors is an integer number (1768631368896).

Almost surely, 2^{21220201000012} is an apocalyptic number.

It is an amenable number.

21220201000012 is an abundant number, since it is smaller than the sum of its proper divisors (21226951853492).

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

21220201000012 is a wasteful number, since it uses less digits than its factorization.

21220201000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120550965 (or 120550963 counting only the distinct ones).

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

Adding to 21220201000012 its reverse (21000010202212), we get a palindrome (42220211202224).

The spelling of 21220201000012 in words is "twenty-one trillion, two hundred twenty billion, two hundred one million, twelve", and thus it is an aban number.