20212220020201 has 4 divisors (see below), whose sum is σ = 22049694567504. Its totient is φ = 18374745472900.

The previous prime is 20212220020189. The next prime is 20212220020283. The reversal of 20212220020201 is 10202002221202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20212220020201 - 2⁵ = 20212220020169 is a prime.

It is a super-2 number, since 2×20212220020201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212220080201) 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 3 ways as a sum of consecutive naturals, for example, 918737273635 + ... + 918737273656.

It is an arithmetic number, because the mean of its divisors is an integer number (5512423641876).

Almost surely, 2^{20212220020201} is an apocalyptic number.

It is an amenable number.

20212220020201 is a deficient number, since it is larger than the sum of its proper divisors (1837474547303).

20212220020201 is a wasteful number, since it uses less digits than its factorization.

20212220020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837474547302.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20212220020201 its reverse (10202002221202), we get a palindrome (30414222241403).

The spelling of 20212220020201 in words is "twenty trillion, two hundred twelve billion, two hundred twenty million, twenty thousand, two hundred one".