20012101211021 has 8 divisors (see below), whose sum is σ = 20402552084640. Its totient is φ = 19623359094768.

The previous prime is 20012101210957. The next prime is 20012101211041. The reversal of 20012101211021 is 12011210121002.

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 20012101211021 - 2⁶ = 20012101210957 is a prime.

It is a super-3 number, since 3×20012101211021³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012101210987 and 20012101211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012101211041) 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 7 ways as a sum of consecutive naturals, for example, 427165691 + ... + 427212536.

It is an arithmetic number, because the mean of its divisors is an integer number (2550319010580).

Almost surely, 2^{20012101211021} is an apocalyptic number.

It is an amenable number.

20012101211021 is a deficient number, since it is larger than the sum of its proper divisors (390450873619).

20012101211021 is an equidigital number, since it uses as much as digits as its factorization.

20012101211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854378683.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20012101211021 its reverse (12011210121002), we get a palindrome (32023311332023).

The spelling of 20012101211021 in words is "twenty trillion, twelve billion, one hundred one million, two hundred eleven thousand, twenty-one".