21011233201202 has 4 divisors (see below), whose sum is σ = 31516849801806. Its totient is φ = 10505616600600.

The previous prime is 21011233201183. The next prime is 21011233201297. The reversal of 21011233201202 is 20210233211012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20620944378841 + 390288822361 = 4541029^2 + 624731^2 .

It is a super-2 number, since 2×21011233201202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252808300299 + ... + 5252808300302.

Almost surely, 2^{21011233201202} is an apocalyptic number.

21011233201202 is a deficient number, since it is larger than the sum of its proper divisors (10505616600604).

21011233201202 is a wasteful number, since it uses less digits than its factorization.

21011233201202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10505616600603.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21011233201202 its reverse (20210233211012), we get a palindrome (41221466412214).

The spelling of 21011233201202 in words is "twenty-one trillion, eleven billion, two hundred thirty-three million, two hundred one thousand, two hundred two".