1222212020212 has 6 divisors (see below), whose sum is σ = 2138871035378. Its totient is φ = 611106010104.

The previous prime is 1222212020207. The next prime is 1222212020251. The reversal of 1222212020212 is 2120202122221.

It can be written as a sum of positive squares in only one way, i.e., 778834490256 + 443377529956 = 882516^2 + 665866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1222212020212.

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, 152776502523 + ... + 152776502530.

Almost surely, 2^{1222212020212} is an apocalyptic number.

It is an amenable number.

1222212020212 is a deficient number, since it is larger than the sum of its proper divisors (916659015166).

1222212020212 is a wasteful number, since it uses less digits than its factorization.

1222212020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305553005057 (or 305553005055 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1222212020212 its reverse (2120202122221), we get a palindrome (3342414142433).

The spelling of 1222212020212 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, twenty thousand, two hundred twelve".