1220220212 has 6 divisors (see below), whose sum is σ = 2135385378. Its totient is φ = 610110104.

The previous prime is 1220220193. The next prime is 1220220227. The reversal of 1220220212 is 2120220221.

It can be written as a sum of positive squares in only one way, i.e., 1127213476 + 93006736 = 33574^2 + 9644^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152527523 + ... + 152527530.

It is an arithmetic number, because the mean of its divisors is an integer number (355897563).

Almost surely, 2^1220220212 is an apocalyptic number.

It is an amenable number.

1220220212 is a deficient number, since it is larger than the sum of its proper divisors (915165166).

1220220212 is a wasteful number, since it uses less digits than its factorization.

1220220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305055057 (or 305055055 counting only the distinct ones).

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

The square root of 1220220212 is about 34931.6505765187. The cubic root of 1220220212 is about 1068.5940167371.

Adding to 1220220212 its reverse (2120220221), we get a palindrome (3340440433).

Subtracting 1220220212 from its reverse (2120220221), we obtain a palindrome (900000009).

The spelling of 1220220212 in words is "one billion, two hundred twenty million, two hundred twenty thousand, two hundred twelve".