20210221002212 has 24 divisors (see below), whose sum is σ = 35444922272760. Its totient is φ = 10083121251840.

The previous prime is 20210221002193. The next prime is 20210221002227. The reversal of 20210221002212 is 21220012201202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9286561432996 + 10923659569216 = 3047386^2 + 3305096^2 .

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, 1258412 + ... + 6481052.

It is an arithmetic number, because the mean of its divisors is an integer number (1476871761365).

Almost surely, 2^{20210221002212} is an apocalyptic number.

It is an amenable number.

20210221002212 is a deficient number, since it is larger than the sum of its proper divisors (15234701270548).

20210221002212 is a wasteful number, since it uses less digits than its factorization.

20210221002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224751 (or 5224749 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20210221002212 its reverse (21220012201202), we get a palindrome (41430233203414).

The spelling of 20210221002212 in words is "twenty trillion, two hundred ten billion, two hundred twenty-one million, two thousand, two hundred twelve".