20212222021210 has 16 divisors (see below), whose sum is σ = 36570507411816. Its totient is φ = 8042998192128.

The previous prime is 20212222021181. The next prime is 20212222021237. The reversal of 20212222021210 is 1212022221202.

It can be written as a sum of positive squares in 4 ways, for example, as 14551348632129 + 5660873389081 = 3814623^2 + 2379259^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5236325019 + ... + 5236328878.

Almost surely, 2^{20212222021210} is an apocalyptic number.

20212222021210 is a deficient number, since it is larger than the sum of its proper divisors (16358285390606).

20212222021210 is a wasteful number, since it uses less digits than its factorization.

20212222021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10472654097.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20212222021210 its reverse (1212022221202), we get a palindrome (21424244242412).

The spelling of 20212222021210 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-two million, twenty-one thousand, two hundred ten".