2012212201021 has 12 divisors (see below), whose sum is σ = 2215699055136. Its totient is φ = 1826034585320.

The previous prime is 2012212200953. The next prime is 2012212201117. The reversal of 2012212201021 is 1201022122102.

It is a happy number.

It is not a de Polignac number, because 2012212201021 - 2¹⁷ = 2012212069949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012212200986 and 2012212201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012212201121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14700841 + ... + 14837086.

It is an arithmetic number, because the mean of its divisors is an integer number (184641587928).

Almost surely, 2^{2012212201021} is an apocalyptic number.

It is an amenable number.

2012212201021 is a deficient number, since it is larger than the sum of its proper divisors (203486854115).

2012212201021 is a wasteful number, since it uses less digits than its factorization.

2012212201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29538512 (or 29538501 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2012212201021 its reverse (1201022122102), we get a palindrome (3213234323123).

The spelling of 2012212201021 in words is "two trillion, twelve billion, two hundred twelve million, two hundred one thousand, twenty-one".