21431401222102 has 16 divisors (see below), whose sum is σ = 32160253480272. Its totient is φ = 10711317546720.

The previous prime is 21431401222097. The next prime is 21431401222129. The reversal of 21431401222102 is 20122210413412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53638288 + ... + 54036364.

It is an arithmetic number, because the mean of its divisors is an integer number (2010015842517).

Almost surely, 2^{21431401222102} is an apocalyptic number.

21431401222102 is a deficient number, since it is larger than the sum of its proper divisors (10728852258170).

21431401222102 is a wasteful number, since it uses less digits than its factorization.

21431401222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409023.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21431401222102 its reverse (20122210413412), we get a palindrome (41553611635514).

The spelling of 21431401222102 in words is "twenty-one trillion, four hundred thirty-one billion, four hundred one million, two hundred twenty-two thousand, one hundred two".