21134242202 has 8 divisors (see below), whose sum is σ = 32474567412. Its totient is φ = 10309386400.

The previous prime is 21134242201. The next prime is 21134242229. The reversal of 21134242202 is 20224243112.

It can be written as a sum of positive squares in 2 ways, for example, as 20340749641 + 793492561 = 142621^2 + 28169^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21134242201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128867249 + ... + 128867412.

Almost surely, 2^21134242202 is an apocalyptic number.

21134242202 is a deficient number, since it is larger than the sum of its proper divisors (11340325210).

21134242202 is a wasteful number, since it uses less digits than its factorization.

21134242202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257734704.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21134242202 its reverse (20224243112), we get a palindrome (41358485314).

The spelling of 21134242202 in words is "twenty-one billion, one hundred thirty-four million, two hundred forty-two thousand, two hundred two".