21202101202 has 8 divisors (see below), whose sum is σ = 32899812300. Its totient is φ = 10235497104.

The previous prime is 21202101199. The next prime is 21202101227. The reversal of 21202101202 is 20210120212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20589093121 + 613008081 = 143489^2 + 24759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182776677 + ... + 182776792.

Almost surely, 2^21202101202 is an apocalyptic number.

21202101202 is a deficient number, since it is larger than the sum of its proper divisors (11697711098).

21202101202 is a wasteful number, since it uses less digits than its factorization.

21202101202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365553500.

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

Adding to 21202101202 its reverse (20210120212), we get a palindrome (41412221414).

The spelling of 21202101202 in words is "twenty-one billion, two hundred two million, one hundred one thousand, two hundred two".