1212022210 has 16 divisors (see below), whose sum is σ = 2493302976. Its totient is φ = 415550448.

The previous prime is 1212022193. The next prime is 1212022211. The reversal of 1212022210 is 122202121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1212022211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8657232 + ... + 8657371.

It is an arithmetic number, because the mean of its divisors is an integer number (155831436).

Almost surely, 2^1212022210 is an apocalyptic number.

1212022210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212022210 is an abundant number, since it is smaller than the sum of its proper divisors (1281280766).

1212022210 is a wasteful number, since it uses less digits than its factorization.

1212022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17314617.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1212022210 is about 34814.1093523876. The cubic root of 1212022210 is about 1066.1955348854.

Adding to 1212022210 its reverse (122202121), we get a palindrome (1334224331).

The spelling of 1212022210 in words is "one billion, two hundred twelve million, twenty-two thousand, two hundred ten".