21202231131302 has 16 divisors (see below), whose sum is σ = 34978476238272. Its totient is φ = 9577439921280.

The previous prime is 21202231131287. The next prime is 21202231131307. The reversal of 21202231131302 is 20313113220212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202231131307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8675216099 + ... + 8675218542.

It is an arithmetic number, because the mean of its divisors is an integer number (2186154764892).

Almost surely, 2^{21202231131302} is an apocalyptic number.

21202231131302 is a deficient number, since it is larger than the sum of its proper divisors (13776245106970).

21202231131302 is a wasteful number, since it uses less digits than its factorization.

21202231131302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17350434703.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21202231131302 its reverse (20313113220212), we get a palindrome (41515344351514).

The spelling of 21202231131302 in words is "twenty-one trillion, two hundred two billion, two hundred thirty-one million, one hundred thirty-one thousand, three hundred two".