21235342002 has 32 divisors (see below), whose sum is σ = 49122726912. Its totient is φ = 5994140304.

The previous prime is 21235341983. The next prime is 21235342013. The reversal of 21235342002 is 20024353212.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3042318 + ... + 3049289.

It is an arithmetic number, because the mean of its divisors is an integer number (1535085216).

Almost surely, 2^21235342002 is an apocalyptic number.

21235342002 is an abundant number, since it is smaller than the sum of its proper divisors (27887384910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21235342002 is a wasteful number, since it uses less digits than its factorization.

21235342002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091702.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 21235342002 its reverse (20024353212), we get a palindrome (41259695214).

The spelling of 21235342002 in words is "twenty-one billion, two hundred thirty-five million, three hundred forty-two thousand, two".