2010212001221 has 4 divisors (see below), whose sum is σ = 2030115090444. Its totient is φ = 1990308912000.

The previous prime is 2010212001197. The next prime is 2010212001223. The reversal of 2010212001221 is 1221002120102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1960266009025 + 49945992196 = 1400095^2 + 223486^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010212001221 - 2⁶ = 2010212001157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010212001196 and 2010212001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010212001223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9951544460 + ... + 9951544661.

It is an arithmetic number, because the mean of its divisors is an integer number (507528772611).

Almost surely, 2^{2010212001221} is an apocalyptic number.

It is an amenable number.

2010212001221 is a deficient number, since it is larger than the sum of its proper divisors (19903089223).

2010212001221 is a wasteful number, since it uses less digits than its factorization.

2010212001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19903089222.

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

Adding to 2010212001221 its reverse (1221002120102), we get a palindrome (3231214121323).

The spelling of 2010212001221 in words is "two trillion, ten billion, two hundred twelve million, one thousand, two hundred twenty-one".