1221101200202 has 32 divisors (see below), whose sum is σ = 2043207769680. Its totient is φ = 543446991360.

The previous prime is 1221101200169. The next prime is 1221101200229. The reversal of 1221101200202 is 2020021011221.

It can be written as a sum of positive squares in 8 ways, for example, as 472943668681 + 748157531521 = 687709^2 + 864961^2 .

It is a super-2 number, since 2×1221101200202² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464699 + ... + 1630382.

Almost surely, 2^{1221101200202} is an apocalyptic number.

1221101200202 is a deficient number, since it is larger than the sum of its proper divisors (822106569478).

1221101200202 is a wasteful number, since it uses less digits than its factorization.

1221101200202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095898.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1221101200202 its reverse (2020021011221), we get a palindrome (3241122211423).

The spelling of 1221101200202 in words is "one trillion, two hundred twenty-one billion, one hundred one million, two hundred thousand, two hundred two".