21223054006202 has 4 divisors (see below), whose sum is σ = 31834581009306. Its totient is φ = 10611527003100.

The previous prime is 21223054006201. The next prime is 21223054006229. The reversal of 21223054006202 is 20260045032212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21132307866121 + 90746140081 = 4596989^2 + 301241^2 .

It is not an unprimeable number, because it can be changed into a prime (21223054006201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5305763501549 + ... + 5305763501552.

Almost surely, 2^{21223054006202} is an apocalyptic number.

21223054006202 is a deficient number, since it is larger than the sum of its proper divisors (10611527003104).

21223054006202 is a wasteful number, since it uses less digits than its factorization.

21223054006202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10611527003103.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 21223054006202 its reverse (20260045032212), we get a palindrome (41483099038414).

The spelling of 21223054006202 in words is "twenty-one trillion, two hundred twenty-three billion, fifty-four million, six thousand, two hundred two".