2021221010210 has 16 divisors (see below), whose sum is σ = 3674219580792. Its totient is φ = 800483568000.

The previous prime is 2021221010203. The next prime is 2021221010279. The reversal of 2021221010210 is 120101221202.

It can be written as a sum of positive squares in 4 ways, for example, as 1917967398649 + 103253611561 = 1384907^2 + 321331^2 .

It is a super-2 number, since 2×2021221010210² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000603451 + ... + 1000605470.

Almost surely, 2^{2021221010210} is an apocalyptic number.

2021221010210 is a deficient number, since it is larger than the sum of its proper divisors (1652998570582).

2021221010210 is a wasteful number, since it uses less digits than its factorization.

2021221010210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001209029.

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

Adding to 2021221010210 its reverse (120101221202), we get a palindrome (2141322231412).

The spelling of 2021221010210 in words is "two trillion, twenty-one billion, two hundred twenty-one million, ten thousand, two hundred ten".