21211030202 has 8 divisors (see below), whose sum is σ = 31817346912. Its totient is φ = 10605247900.

The previous prime is 21211030199. The next prime is 21211030231. The reversal of 21211030202 is 20203011212.

It is a happy number.

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, 12374 + ... + 206337.

It is an arithmetic number, because the mean of its divisors is an integer number (3977168364).

Almost surely, 2^21211030202 is an apocalyptic number.

21211030202 is a deficient number, since it is larger than the sum of its proper divisors (10606316710).

21211030202 is a wasteful number, since it uses less digits than its factorization.

21211030202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267204.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21211030202 its reverse (20203011212), we get a palindrome (41414041414).

The spelling of 21211030202 in words is "twenty-one billion, two hundred eleven million, thirty thousand, two hundred two".