20210001221202 has 32 divisors (see below), whose sum is σ = 43936048683072. Its totient is φ = 6160345445184.

The previous prime is 20210001221183. The next prime is 20210001221203. The reversal of 20210001221202 is 20212210001202.

It is not an unprimeable number, because it can be changed into a prime (20210001221203) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1210751373 + ... + 1210768064.

It is an arithmetic number, because the mean of its divisors is an integer number (1373001521346).

Almost surely, 2^{20210001221202} is an apocalyptic number.

20210001221202 is an abundant number, since it is smaller than the sum of its proper divisors (23726047461870).

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

20210001221202 is a wasteful number, since it uses less digits than its factorization.

20210001221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421519562.

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

Adding to 20210001221202 its reverse (20212210001202), we get a palindrome (40422211222404).

The spelling of 20210001221202 in words is "twenty trillion, two hundred ten billion, one million, two hundred twenty-one thousand, two hundred two".