21310214246 has 16 divisors (see below), whose sum is σ = 34134272640. Its totient is φ = 9955827840.

The previous prime is 21310214231. The next prime is 21310214309. The reversal of 21310214246 is 64241201312.

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, 5924291 + ... + 5927886.

It is an arithmetic number, because the mean of its divisors is an integer number (2133392040).

Almost surely, 2^21310214246 is an apocalyptic number.

21310214246 is a deficient number, since it is larger than the sum of its proper divisors (12824058394).

21310214246 is a wasteful number, since it uses less digits than its factorization.

21310214246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11852239.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 21310214246 its reverse (64241201312), we get a palindrome (85551415558).

The spelling of 21310214246 in words is "twenty-one billion, three hundred ten million, two hundred fourteen thousand, two hundred forty-six".