21220201133012 has 24 divisors (see below), whose sum is σ = 42440499851904. Its totient is φ = 9094351002912.

The previous prime is 21220201132993. The next prime is 21220201133071. The reversal of 21220201133012 is 21033110202212.

It is a super-2 number, since 2×21220201133012² (a number of 27 digits) contains 22 as substring.

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, 22932098 + ... + 23839494.

It is an arithmetic number, because the mean of its divisors is an integer number (1768354160496).

Almost surely, 2^{21220201133012} is an apocalyptic number.

It is an amenable number.

21220201133012 is an abundant number, since it is smaller than the sum of its proper divisors (21220298718892).

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

21220201133012 is a wasteful number, since it uses less digits than its factorization.

21220201133012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742615 (or 1742613 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21220201133012 its reverse (21033110202212), we get a palindrome (42253311335224).

The spelling of 21220201133012 in words is "twenty-one trillion, two hundred twenty billion, two hundred one million, one hundred thirty-three thousand, twelve".