20210455212 has 96 divisors (see below), whose sum is σ = 50640629760. Its totient is φ = 6257771520.

The previous prime is 20210455169. The next prime is 20210455271. The reversal of 20210455212 is 21255401202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2519464 + ... + 2527472.

It is an arithmetic number, because the mean of its divisors is an integer number (527506560).

Almost surely, 2^20210455212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20210455212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25320314880).

20210455212 is an abundant number, since it is smaller than the sum of its proper divisors (30430174548).

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

20210455212 is a wasteful number, since it uses less digits than its factorization.

20210455212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8303 (or 8301 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 20210455212 its reverse (21255401202), we get a palindrome (41465856414).

The spelling of 20210455212 in words is "twenty billion, two hundred ten million, four hundred fifty-five thousand, two hundred twelve".