201212021020202 has 4 divisors (see below), whose sum is σ = 301818031530306. Its totient is φ = 100606010510100.

The previous prime is 201212021020169. The next prime is 201212021020243. The reversal of 201212021020202 is 202020120212102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 201149291309521 + 62729710681 = 14182711^2 + 250459^2 .

It is a super-2 number, since 2×201212021020202² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50303005255049 + ... + 50303005255052.

Almost surely, 2^{201212021020202} is an apocalyptic number.

201212021020202 is a deficient number, since it is larger than the sum of its proper divisors (100606010510104).

201212021020202 is a wasteful number, since it uses less digits than its factorization.

201212021020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100606010510103.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201212021020202 its reverse (202020120212102), we get a palindrome (403232141232304).

The spelling of 201212021020202 in words is "two hundred one trillion, two hundred twelve billion, twenty-one million, twenty thousand, two hundred two".