2010001221221 has 16 divisors (see below), whose sum is σ = 2474280230400. Its totient is φ = 1594223730288.

The previous prime is 2010001221169. The next prime is 2010001221253. The reversal of 2010001221221 is 1221221000102.

It is not a de Polignac number, because 2010001221221 - 2¹⁴ = 2010001204837 is a prime.

It is a super-2 number, since 2×2010001221221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010001221196 and 2010001221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010001221421) 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, 175724411 + ... + 175735848.

It is an arithmetic number, because the mean of its divisors is an integer number (154642514400).

Almost surely, 2^{2010001221221} is an apocalyptic number.

It is an amenable number.

2010001221221 is a deficient number, since it is larger than the sum of its proper divisors (464279009179).

2010001221221 is a wasteful number, since it uses less digits than its factorization.

2010001221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351460328.

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

Adding to 2010001221221 its reverse (1221221000102), we get a palindrome (3231222221323).

The spelling of 2010001221221 in words is "two trillion, ten billion, one million, two hundred twenty-one thousand, two hundred twenty-one".