21000310220312 has 8 divisors (see below), whose sum is σ = 39375581663100. Its totient is φ = 10500155110152.

The previous prime is 21000310220297. The next prime is 21000310220327. The reversal of 21000310220312 is 21302201300012.

It is an interprime number because it is at equal distance from previous prime (21000310220297) and next prime (21000310220327).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1312519388762 + ... + 1312519388777.

Almost surely, 2^{21000310220312} is an apocalyptic number.

It is an amenable number.

21000310220312 is a deficient number, since it is larger than the sum of its proper divisors (18375271442788).

21000310220312 is a wasteful number, since it uses less digits than its factorization.

21000310220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625038777545 (or 2625038777541 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21000310220312 its reverse (21302201300012), we get a palindrome (42302511520324).

The spelling of 21000310220312 in words is "twenty-one trillion, three hundred ten million, two hundred twenty thousand, three hundred twelve".