21000201202 has 4 divisors (see below), whose sum is σ = 31500301806. Its totient is φ = 10500100600.

The previous prime is 21000201199. The next prime is 21000201217. The reversal of 21000201202 is 20210200012.

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., 20808351001 + 191850201 = 144251^2 + 13851^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5250050299 + ... + 5250050302.

Almost surely, 2^21000201202 is an apocalyptic number.

21000201202 is a deficient number, since it is larger than the sum of its proper divisors (10500100604).

21000201202 is a wasteful number, since it uses less digits than its factorization.

21000201202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10500100603.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21000201202 its reverse (20210200012), we get a palindrome (41210401214).

The spelling of 21000201202 in words is "twenty-one billion, two hundred one thousand, two hundred two".