20002122212 has 6 divisors (see below), whose sum is σ = 35003713878. Its totient is φ = 10001061104.

The previous prime is 20002122211. The next prime is 20002122221. The reversal of 20002122212 is 21222120002.

It can be written as a sum of positive squares in only one way, i.e., 12720230656 + 7281891556 = 112784^2 + 85334^2 .

It is not an unprimeable number, because it can be changed into a prime (20002122211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500265273 + ... + 2500265280.

It is an arithmetic number, because the mean of its divisors is an integer number (5833952313).

Almost surely, 2^20002122212 is an apocalyptic number.

It is an amenable number.

20002122212 is a deficient number, since it is larger than the sum of its proper divisors (15001591666).

20002122212 is a wasteful number, since it uses less digits than its factorization.

20002122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000530557 (or 5000530555 counting only the distinct ones).

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

Adding to 20002122212 its reverse (21222120002), we get a palindrome (41224242214).

It can be divided in two parts, 2000 and 2122212, that added together give a palindrome (2124212).

The spelling of 20002122212 in words is "twenty billion, two million, one hundred twenty-two thousand, two hundred twelve".