20220021212 has 6 divisors (see below), whose sum is σ = 35385037128. Its totient is φ = 10110010604.

The previous prime is 20220021167. The next prime is 20220021271. The reversal of 20220021212 is 21212002202.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2527502648 + ... + 2527502655.

It is an arithmetic number, because the mean of its divisors is an integer number (5897506188).

Almost surely, 2^20220021212 is an apocalyptic number.

It is an amenable number.

20220021212 is a deficient number, since it is larger than the sum of its proper divisors (15165015916).

20220021212 is a wasteful number, since it uses less digits than its factorization.

20220021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055005307 (or 5055005305 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20220021212 its reverse (21212002202), we get a palindrome (41432023414).

The spelling of 20220021212 in words is "twenty billion, two hundred twenty million, twenty-one thousand, two hundred twelve".