1211201222 has 32 divisors (see below), whose sum is σ = 2276895744. Its totient is φ = 469440000.

The previous prime is 1211201207. The next prime is 1211201237. The reversal of 1211201222 is 2221021121.

It is an interprime number because it is at equal distance from previous prime (1211201207) and next prime (1211201237).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1211201197 and 1211201206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9347 + ... + 50097.

It is an arithmetic number, because the mean of its divisors is an integer number (71152992).

Almost surely, 2^1211201222 is an apocalyptic number.

1211201222 is a deficient number, since it is larger than the sum of its proper divisors (1065694522).

1211201222 is a wasteful number, since it uses less digits than its factorization.

1211201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40964.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1211201222 is about 34802.3163309571. The cubic root of 1211201222 is about 1065.9547440680.

Adding to 1211201222 its reverse (2221021121), we get a palindrome (3432222343).

The spelling of 1211201222 in words is "one billion, two hundred eleven million, two hundred one thousand, two hundred twenty-two".