21202202013 has 16 divisors (see below), whose sum is σ = 28524652416. Its totient is φ = 14007803840.

The previous prime is 21202201981. The next prime is 21202202029. The reversal of 21202202013 is 31020220212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21202202013 - 2⁵ = 21202201981 is a prime.

It is a super-2 number, since 2×21202202013² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21202201983 and 21202202001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202202113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95731 + ... + 227087.

It is an arithmetic number, because the mean of its divisors is an integer number (1782790776).

Almost surely, 2^21202202013 is an apocalyptic number.

It is an amenable number.

21202202013 is a deficient number, since it is larger than the sum of its proper divisors (7322450403).

21202202013 is a wasteful number, since it uses less digits than its factorization.

21202202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131844.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21202202013 its reverse (31020220212), we get a palindrome (52222422225).

The spelling of 21202202013 in words is "twenty-one billion, two hundred two million, two hundred two thousand, thirteen".