20201222212 has 12 divisors (see below), whose sum is σ = 35360898300. Its totient is φ = 10098108416.

The previous prime is 20201222203. The next prime is 20201222221. The reversal of 20201222212 is 21222210202.

It is an interprime number because it is at equal distance from previous prime (20201222203) and next prime (20201222221).

It can be written as a sum of positive squares in 2 ways, for example, as 2973084676 + 17228137536 = 54526^2 + 131256^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607453 + ... + 639844.

It is an arithmetic number, because the mean of its divisors is an integer number (2946741525).

Almost surely, 2^20201222212 is an apocalyptic number.

It is an amenable number.

20201222212 is a deficient number, since it is larger than the sum of its proper divisors (15159676088).

20201222212 is a wasteful number, since it uses less digits than its factorization.

20201222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251350 (or 1251348 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20201222212 its reverse (21222210202), we get a palindrome (41423432414).

The spelling of 20201222212 in words is "twenty billion, two hundred one million, two hundred twenty-two thousand, two hundred twelve".