1221211210202 has 8 divisors (see below), whose sum is σ = 1911461024736. Its totient is φ = 584057535292.

The previous prime is 1221211210103. The next prime is 1221211210273. The reversal of 1221211210202 is 2020121121221.

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, 13274034848 + ... + 13274034939.

It is an arithmetic number, because the mean of its divisors is an integer number (238932628092).

Almost surely, 2^{1221211210202} is an apocalyptic number.

1221211210202 is a deficient number, since it is larger than the sum of its proper divisors (690249814534).

1221211210202 is a wasteful number, since it uses less digits than its factorization.

1221211210202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26548069812.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1221211210202 its reverse (2020121121221), we get a palindrome (3241332331423).

The spelling of 1221211210202 in words is "one trillion, two hundred twenty-one billion, two hundred eleven million, two hundred ten thousand, two hundred two".