1213400222 has 16 divisors (see below), whose sum is σ = 1872218880. Its totient is φ = 589513368.

The previous prime is 1213400203. The next prime is 1213400231. The reversal of 1213400222 is 2220043121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213400222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33368 + ... + 59499.

It is an arithmetic number, because the mean of its divisors is an integer number (117013680).

Almost surely, 2^1213400222 is an apocalyptic number.

1213400222 is a deficient number, since it is larger than the sum of its proper divisors (658818658).

1213400222 is a wasteful number, since it uses less digits than its factorization.

1213400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93055.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1213400222 is about 34833.8947291284. The cubic root of 1213400222 is about 1066.5994531650.

Adding to 1213400222 its reverse (2220043121), we get a palindrome (3433443343).

The spelling of 1213400222 in words is "one billion, two hundred thirteen million, four hundred thousand, two hundred twenty-two".