1212220010 has 16 divisors (see below), whose sum is σ = 2257237800. Its totient is φ = 468167616.

The previous prime is 1212219989. The next prime is 1212220033. The reversal of 1212220010 is 100222121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1074462841 + 137757169 = 32779^2 + 11737^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212219973 and 1212220000.

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, 2089745 + ... + 2090324.

Almost surely, 2^1212220010 is an apocalyptic number.

1212220010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212220010 is a deficient number, since it is larger than the sum of its proper divisors (1045017790).

1212220010 is a wasteful number, since it uses less digits than its factorization.

1212220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180105.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1212220010 is about 34816.9500387383. The cubic root of 1212220010 is about 1066.2535321739.

Adding to 1212220010 its reverse (100222121), we get a palindrome (1312442131).

The spelling of 1212220010 in words is "one billion, two hundred twelve million, two hundred twenty thousand, ten".