21021201202 has 16 divisors (see below), whose sum is σ = 31727868480. Its totient is φ = 10445446192.

The previous prime is 21021201193. The next prime is 21021201211. The reversal of 21021201202 is 20210212012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21021201193) and next prime (21021201211).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160413 + ... + 260335.

It is an arithmetic number, because the mean of its divisors is an integer number (1982991780).

Almost surely, 2^21021201202 is an apocalyptic number.

21021201202 is a deficient number, since it is larger than the sum of its proper divisors (10706667278).

21021201202 is a wasteful number, since it uses less digits than its factorization.

21021201202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100577.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21021201202 its reverse (20210212012), we get a palindrome (41231413214).

The spelling of 21021201202 in words is "twenty-one billion, twenty-one million, two hundred one thousand, two hundred two".