20210100120221 has 32 divisors (see below), whose sum is σ = 23030475552000. Its totient is φ = 17555286228480.

The previous prime is 20210100120173. The next prime is 20210100120233. The reversal of 20210100120221 is 12202100101202.

It is not a de Polignac number, because 20210100120221 - 2²² = 20210095925917 is a prime.

It is a super-4 number, since 4×20210100120221⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a junction number, because it is equal to n+sod(n) for n = 20210100120196 and 20210100120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210100120251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1037629535 + ... + 1037649011.

It is an arithmetic number, because the mean of its divisors is an integer number (719702361000).

Almost surely, 2^{20210100120221} is an apocalyptic number.

It is an amenable number.

20210100120221 is a deficient number, since it is larger than the sum of its proper divisors (2820375431779).

20210100120221 is a wasteful number, since it uses less digits than its factorization.

20210100120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23669.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20210100120221 its reverse (12202100101202), we get a palindrome (32412200221423).

The spelling of 20210100120221 in words is "twenty trillion, two hundred ten billion, one hundred million, one hundred twenty thousand, two hundred twenty-one".