1212220210210 has 16 divisors (see below), whose sum is σ = 2182118079096. Its totient is φ = 484861039488.

The previous prime is 1212220210183. The next prime is 1212220210237. The reversal of 1212220210210 is 120120222121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1212220210183) and next prime (1212220210237).

It can be written as a sum of positive squares in 4 ways, for example, as 1142912803041 + 69307407169 = 1069071^2 + 263263^2 .

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, 3191817 + ... + 3551356.

Almost surely, 2^{1212220210210} is an apocalyptic number.

1212220210210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212220210210 is a deficient number, since it is larger than the sum of its proper divisors (969897868886).

1212220210210 is a wasteful number, since it uses less digits than its factorization.

1212220210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6761157.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212220210210 its reverse (120120222121), we get a palindrome (1332340432331).

The spelling of 1212220210210 in words is "one trillion, two hundred twelve billion, two hundred twenty million, two hundred ten thousand, two hundred ten".