20213000121210 has 96 divisors (see below), whose sum is σ = 55496710144512. Its totient is φ = 4682830771200.

The previous prime is 20213000121203. The next prime is 20213000121233. The reversal of 20213000121210 is 1212100031202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20213000121210.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89555466 + ... + 89780885.

It is an arithmetic number, because the mean of its divisors is an integer number (578090730672).

Almost surely, 2^{20213000121210} is an apocalyptic number.

20213000121210 is an abundant number, since it is smaller than the sum of its proper divisors (35283710023302).

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

20213000121210 is a wasteful number, since it uses less digits than its factorization.

20213000121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179336408 (or 179336391 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20213000121210 its reverse (1212100031202), we get a palindrome (21425100152412).

The spelling of 20213000121210 in words is "twenty trillion, two hundred thirteen billion, one hundred twenty-one thousand, two hundred ten".