2021212220202 has 96 divisors (see below), whose sum is σ = 5082999292800. Its totient is φ = 568546003584.

The previous prime is 2021212220197. The next prime is 2021212220239. The reversal of 2021212220202 is 2020222121202.

2021212220202 is a `hidden beast` number, since 20 + 212 + 12 + 220 + 202 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 1687549 + ... + 2624927.

It is an arithmetic number, because the mean of its divisors is an integer number (52947909300).

Almost surely, 2^{2021212220202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021212220202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2541499646400).

2021212220202 is an abundant number, since it is smaller than the sum of its proper divisors (3061787072598).

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

2021212220202 is a wasteful number, since it uses less digits than its factorization.

2021212220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937660 (or 937657 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2021212220202 its reverse (2020222121202), we get a palindrome (4041434341404).

The spelling of 2021212220202 in words is "two trillion, twenty-one billion, two hundred twelve million, two hundred twenty thousand, two hundred two".