20122220212 has 12 divisors (see below), whose sum is σ = 35215498276. Its totient is φ = 10060649280.

The previous prime is 20122220201. The next prime is 20122220257. The reversal of 20122220212 is 21202222102.

It can be written as a sum of positive squares in 2 ways, for example, as 8912492836 + 11209727376 = 94406^2 + 105876^2 .

It is a congruent number.

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, 5313 + ... + 200680.

Almost surely, 2^20122220212 is an apocalyptic number.

It is an amenable number.

20122220212 is a deficient number, since it is larger than the sum of its proper divisors (15093278064).

20122220212 is a wasteful number, since it uses less digits than its factorization.

20122220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230418 (or 230416 counting only the distinct ones).

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

Adding to 20122220212 its reverse (21202222102), we get a palindrome (41324442314).

The spelling of 20122220212 in words is "twenty billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twelve".