20212002101121 has 4 divisors (see below), whose sum is σ = 26949336134832. Its totient is φ = 13474668067412.

The previous prime is 20212002101107. The next prime is 20212002101171. The reversal of 20212002101121 is 12110120021202.

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 20212002101121 - 2¹³ = 20212002092929 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20212002101121.

It is not an unprimeable number, because it can be changed into a prime (20212002101171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3368667016851 + ... + 3368667016856.

It is an arithmetic number, because the mean of its divisors is an integer number (6737334033708).

Almost surely, 2^{20212002101121} is an apocalyptic number.

It is an amenable number.

20212002101121 is a deficient number, since it is larger than the sum of its proper divisors (6737334033711).

20212002101121 is an equidigital number, since it uses as much as digits as its factorization.

20212002101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6737334033710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20212002101121 its reverse (12110120021202), we get a palindrome (32322122122323).

The spelling of 20212002101121 in words is "twenty trillion, two hundred twelve billion, two million, one hundred one thousand, one hundred twenty-one".