1222213412 has 24 divisors (see below), whose sum is σ = 2445295104. Its totient is φ = 523619712.

The previous prime is 1222213411. The next prime is 1222213417. The reversal of 1222213412 is 2143122221.

It is not an unprimeable number, because it can be changed into a prime (1222213411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97613 + ... + 109419.

It is an arithmetic number, because the mean of its divisors is an integer number (101887296).

Almost surely, 2^1222213412 is an apocalyptic number.

It is an amenable number.

1222213412 is an abundant number, since it is smaller than the sum of its proper divisors (1223081692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222213412 is a wasteful number, since it uses less digits than its factorization.

1222213412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15515 (or 15513 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 1222213412 is about 34960.1689355186. The cubic root of 1222213412 is about 1069.1755409842.

Adding to 1222213412 its reverse (2143122221), we get a palindrome (3365335633).

The spelling of 1222213412 in words is "one billion, two hundred twenty-two million, two hundred thirteen thousand, four hundred twelve".