210021012222 has 64 divisors (see below), whose sum is σ = 496863105024. Its totient is φ = 57914507520.

The previous prime is 210021012221. The next prime is 210021012239. The reversal of 210021012222 is 222210120012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021012221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269418 + ... + 701874.

It is an arithmetic number, because the mean of its divisors is an integer number (7763486016).

Almost surely, 2^210021012222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210021012222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248431552512).

210021012222 is an abundant number, since it is smaller than the sum of its proper divisors (286842092802).

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

210021012222 is a wasteful number, since it uses less digits than its factorization.

210021012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432873.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 210021012222 its reverse (222210120012), we get a palindrome (432231132234).

The spelling of 210021012222 in words is "two hundred ten billion, twenty-one million, twelve thousand, two hundred twenty-two".