1212211212010 has 8 divisors (see below), whose sum is σ = 2181980181636. Its totient is φ = 484884484800.

The previous prime is 1212211211999. The next prime is 1212211212029. The reversal of 1212211212010 is 102121122121.

It can be written as a sum of positive squares in 2 ways, for example, as 1138448454361 + 73762757649 = 1066981^2 + 271593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60610560591 + ... + 60610560610.

Almost surely, 2^{1212211212010} is an apocalyptic number.

1212211212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212211212010 is a deficient number, since it is larger than the sum of its proper divisors (969768969626).

1212211212010 is a wasteful number, since it uses less digits than its factorization.

1212211212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121221121208.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212211212010 its reverse (102121122121), we get a palindrome (1314332334131).

The spelling of 1212211212010 in words is "one trillion, two hundred twelve billion, two hundred eleven million, two hundred twelve thousand, ten".