20212121022101 has 8 divisors (see below), whose sum is σ = 20333271081984. Its totient is φ = 20090972383920.

The previous prime is 20212121022091. The next prime is 20212121022103. The reversal of 20212121022101 is 10122012121202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20212121022101 - 2³⁸ = 19937243115157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20212121022101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212121022103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47042636 + ... + 47470346.

It is an arithmetic number, because the mean of its divisors is an integer number (2541658885248).

Almost surely, 2^{20212121022101} is an apocalyptic number.

It is an amenable number.

20212121022101 is a deficient number, since it is larger than the sum of its proper divisors (121150059883).

20212121022101 is a wasteful number, since it uses less digits than its factorization.

20212121022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710851.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20212121022101 its reverse (10122012121202), we get a palindrome (30334133143303).

The spelling of 20212121022101 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-one million, twenty-two thousand, one hundred one".