2010012021221 has 16 divisors (see below), whose sum is σ = 2038958784000. Its totient is φ = 1981247184000.

The previous prime is 2010012021191. The next prime is 2010012021247. The reversal of 2010012021221 is 1221202100102.

It is a cyclic number.

It is not a de Polignac number, because 2010012021221 - 2¹⁰ = 2010012020197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010012021196 and 2010012021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010092021221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112213256 + ... + 112231166.

It is an arithmetic number, because the mean of its divisors is an integer number (127434924000).

Almost surely, 2^{2010012021221} is an apocalyptic number.

It is an amenable number.

2010012021221 is a deficient number, since it is larger than the sum of its proper divisors (28946762779).

2010012021221 is a wasteful number, since it uses less digits than its factorization.

2010012021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22900.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2010012021221 its reverse (1221202100102), we get a palindrome (3231214121323).

It can be divided in two parts, 201001 and 2021221, that added together give a palindrome (2222222).

The spelling of 2010012021221 in words is "two trillion, ten billion, twelve million, twenty-one thousand, two hundred twenty-one".