202201121210020 has 48 divisors (see below), whose sum is σ = 431593092509040. Its totient is φ = 79558629636096.

The previous prime is 202201121209987. The next prime is 202201121210057. The reversal of 202201121210020 is 20012121102202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 16508554077184 + 185692567132836 = 4063072^2 + 13626906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202201121209976 and 202201121210003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185104105 + ... + 186193264.

It is an arithmetic number, because the mean of its divisors is an integer number (8991522760605).

Almost surely, 2^{202201121210020} is an apocalyptic number.

202201121210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202201121210020 is an abundant number, since it is smaller than the sum of its proper divisors (229391971299020).

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

202201121210020 is a wasteful number, since it uses less digits than its factorization.

202201121210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371297824 (or 371297822 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202201121210020 its reverse (20012121102202), we get a palindrome (222213242312222).

The spelling of 202201121210020 in words is "two hundred two trillion, two hundred one billion, one hundred twenty-one million, two hundred ten thousand, twenty".