2010121222221 has 24 divisors (see below), whose sum is σ = 3388897384704. Its totient is φ = 1124201532960.

The previous prime is 2010121222211. The next prime is 2010121222243. The reversal of 2010121222221 is 1222221210102.

It is a happy number.

2010121222221 is a `hidden beast` number, since 201 + 0 + 1 + 21 + 222 + 221 = 666.

It is not a de Polignac number, because 2010121222221 - 2¹⁷ = 2010121091149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2010121222194 and 2010121222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010121222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339429870 + ... + 339435791.

It is an arithmetic number, because the mean of its divisors is an integer number (141204057696).

Almost surely, 2^{2010121222221} is an apocalyptic number.

2010121222221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2010121222221 is a deficient number, since it is larger than the sum of its proper divisors (1378776162483).

2010121222221 is a wasteful number, since it uses less digits than its factorization.

2010121222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678865721 (or 678865718 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2010121222221 its reverse (1222221210102), we get a palindrome (3232342432323).

The spelling of 2010121222221 in words is "two trillion, ten billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".