21202202011 has 8 divisors (see below), whose sum is σ = 22587001920. Its totient is φ = 19844291592.

The previous prime is 21202201981. The next prime is 21202202029. The reversal of 21202202011 is 11020220212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21202202011 - 2¹³ = 21202193819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21202201982 and 21202202000.

It is not an unprimeable number, because it can be changed into a prime (21202202041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6720745 + ... + 6723898.

It is an arithmetic number, because the mean of its divisors is an integer number (2823375240).

Almost surely, 2^21202202011 is an apocalyptic number.

21202202011 is a deficient number, since it is larger than the sum of its proper divisors (1384799909).

21202202011 is a wasteful number, since it uses less digits than its factorization.

21202202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13444745.

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

Adding to 21202202011 its reverse (11020220212), we get a palindrome (32222422223).

The spelling of 21202202011 in words is "twenty-one billion, two hundred two million, two hundred two thousand, eleven".