2021213321210 has 16 divisors (see below), whose sum is σ = 3697826339592. Its totient is φ = 795231470400.

The previous prime is 2021213321189. The next prime is 2021213321213. The reversal of 2021213321210 is 121233121202.

It can be written as a sum of positive squares in 4 ways, for example, as 1169743913209 + 851469408001 = 1081547^2 + 922751^2 .

It is not an unprimeable number, because it can be changed into a prime (2021213321213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1656731621 + ... + 1656732840.

Almost surely, 2^{2021213321210} is an apocalyptic number.

2021213321210 is a deficient number, since it is larger than the sum of its proper divisors (1676613018382).

2021213321210 is a wasteful number, since it uses less digits than its factorization.

2021213321210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313464529.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2021213321210 its reverse (121233121202), we get a palindrome (2142446442412).

The spelling of 2021213321210 in words is "two trillion, twenty-one billion, two hundred thirteen million, three hundred twenty-one thousand, two hundred ten".