2221002122212 has 6 divisors (see below), whose sum is σ = 3886753713878. Its totient is φ = 1110501061104.

The previous prime is 2221002122197. The next prime is 2221002122243. The reversal of 2221002122212 is 2122212001222.

It can be written as a sum of positive squares in only one way, i.e., 2181251332836 + 39750789376 = 1476906^2 + 199376^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2221002122212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277625265273 + ... + 277625265280.

Almost surely, 2^{2221002122212} is an apocalyptic number.

It is an amenable number.

2221002122212 is a deficient number, since it is larger than the sum of its proper divisors (1665751591666).

2221002122212 is a wasteful number, since it uses less digits than its factorization.

2221002122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555250530557 (or 555250530555 counting only the distinct ones).

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

Adding to 2221002122212 its reverse (2122212001222), we get a palindrome (4343214123434).

The spelling of 2221002122212 in words is "two trillion, two hundred twenty-one billion, two million, one hundred twenty-two thousand, two hundred twelve".