21203030301202 has 4 divisors (see below), whose sum is σ = 31804545451806. Its totient is φ = 10601515150600.

The previous prime is 21203030301133. The next prime is 21203030301223. The reversal of 21203030301202 is 20210303030212.

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., 15520046323401 + 5682983977801 = 3939549^2 + 2383901^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21203030301202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300757575299 + ... + 5300757575302.

Almost surely, 2^{21203030301202} is an apocalyptic number.

21203030301202 is a deficient number, since it is larger than the sum of its proper divisors (10601515150604).

21203030301202 is a wasteful number, since it uses less digits than its factorization.

21203030301202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10601515150603.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21203030301202 its reverse (20210303030212), we get a palindrome (41413333331414).

The spelling of 21203030301202 in words is "twenty-one trillion, two hundred three billion, thirty million, three hundred one thousand, two hundred two".