2121201020202 has 32 divisors (see below), whose sum is σ = 4871657848320. Its totient is φ = 608957230320.

The previous prime is 2121201020177. The next prime is 2121201020203. The reversal of 2121201020202 is 2020201021212.

It is a super-2 number, since 2×2121201020202² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121201020203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 845772678 + ... + 845775185.

It is an arithmetic number, because the mean of its divisors is an integer number (152239307760).

Almost surely, 2^{2121201020202} is an apocalyptic number.

2121201020202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2121201020202 is an abundant number, since it is smaller than the sum of its proper divisors (2750456828118).

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

2121201020202 is a wasteful number, since it uses less digits than its factorization.

2121201020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691547898.

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

Adding to 2121201020202 its reverse (2020201021212), we get a palindrome (4141402041414).

The spelling of 2121201020202 in words is "two trillion, one hundred twenty-one billion, two hundred one million, twenty thousand, two hundred two".