2021212221202 has 8 divisors (see below), whose sum is σ = 3032784811836. Its totient is φ = 1010283950592.

The previous prime is 2021212221157. The next prime is 2021212221227. The reversal of 2021212221202 is 2021222121202.

It can be written as a sum of positive squares in 2 ways, for example, as 1415288536281 + 605923684921 = 1189659^2 + 778411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2021212221202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161072163 + ... + 161084710.

Almost surely, 2^{2021212221202} is an apocalyptic number.

2021212221202 is a deficient number, since it is larger than the sum of its proper divisors (1011572590634).

2021212221202 is a wasteful number, since it uses less digits than its factorization.

2021212221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322160012.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2021212221202 its reverse (2021222121202), we get a palindrome (4042434342404).

The spelling of 2021212221202 in words is "two trillion, twenty-one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred two".