1221210012202 has 8 divisors (see below), whose sum is σ = 1841935543812. Its totient is φ = 607231497600.

The previous prime is 1221210012181. The next prime is 1221210012223. The reversal of 1221210012202 is 2022100121221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1221210012181) and next prime (1221210012223).

It can be written as a sum of positive squares in 2 ways, for example, as 760455505681 + 460754506521 = 872041^2 + 678789^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1686753799 + ... + 1686754522.

Almost surely, 2^{1221210012202} is an apocalyptic number.

1221210012202 is a deficient number, since it is larger than the sum of its proper divisors (620725531610).

1221210012202 is a wasteful number, since it uses less digits than its factorization.

1221210012202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373508504.

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

Adding to 1221210012202 its reverse (2022100121221), we get a palindrome (3243310133423).

The spelling of 1221210012202 in words is "one trillion, two hundred twenty-one billion, two hundred ten million, twelve thousand, two hundred two".