12020020212101 has 4 divisors (see below), whose sum is σ = 13112749322304. Its totient is φ = 10927291101900.

The previous prime is 12020020212077. The next prime is 12020020212103. The reversal of 12020020212101 is 10121202002021.

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 12020020212101 - 2¹⁴ = 12020020195717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020020212103) 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, 546364555085 + ... + 546364555106.

It is an arithmetic number, because the mean of its divisors is an integer number (3278187330576).

Almost surely, 2^{12020020212101} is an apocalyptic number.

12020020212101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12020020212101 is a deficient number, since it is larger than the sum of its proper divisors (1092729110203).

12020020212101 is a wasteful number, since it uses less digits than its factorization.

12020020212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092729110202.

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

Adding to 12020020212101 its reverse (10121202002021), we get a palindrome (22141222214122).

The spelling of 12020020212101 in words is "twelve trillion, twenty billion, twenty million, two hundred twelve thousand, one hundred one".