21341220002 has 32 divisors (see below), whose sum is σ = 33580364400. Its totient is φ = 10159034368.

The previous prime is 21341219989. The next prime is 21341220097. The reversal of 21341220002 is 20002214312.

It can be written as a sum of positive squares in 8 ways, for example, as 15672786481 + 5668433521 = 125191^2 + 75289^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1282874 + ... + 1299402.

Almost surely, 2^21341220002 is an apocalyptic number.

21341220002 is a deficient number, since it is larger than the sum of its proper divisors (12239144398).

21341220002 is a wasteful number, since it uses less digits than its factorization.

21341220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16870.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21341220002 its reverse (20002214312), we get a palindrome (41343434314).

The spelling of 21341220002 in words is "twenty-one billion, three hundred forty-one million, two hundred twenty thousand, two".