21202514041402 has 8 divisors (see below), whose sum is σ = 31831354561716. Its totient is φ = 10592062520832.

The previous prime is 21202514041391. The next prime is 21202514041403. The reversal of 21202514041402 is 20414041520212.

It can be written as a sum of positive squares in 2 ways, for example, as 17002600743241 + 4199913298161 = 4123421^2 + 2049369^2 .

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 (21202514041403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4597247053 + ... + 4597251664.

Almost surely, 2^{21202514041402} is an apocalyptic number.

21202514041402 is a deficient number, since it is larger than the sum of its proper divisors (10628840520314).

21202514041402 is a wasteful number, since it uses less digits than its factorization.

21202514041402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9194499872.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 21202514041402 its reverse (20414041520212), we get a palindrome (41616555561614).

The spelling of 21202514041402 in words is "twenty-one trillion, two hundred two billion, five hundred fourteen million, forty-one thousand, four hundred two".