20210220012101 has 4 divisors (see below), whose sum is σ = 23097394299552. Its totient is φ = 17323045724652.

The previous prime is 20210220012077. The next prime is 20210220012107. The reversal of 20210220012101 is 10121002201202.

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 a de Polignac number, because none of the positive numbers 2^k-20210220012101 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 (20210220012107) 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, 1443587143715 + ... + 1443587143728.

It is an arithmetic number, because the mean of its divisors is an integer number (5774348574888).

Almost surely, 2^{20210220012101} is an apocalyptic number.

It is an amenable number.

20210220012101 is a deficient number, since it is larger than the sum of its proper divisors (2887174287451).

20210220012101 is an equidigital number, since it uses as much as digits as its factorization.

20210220012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887174287450.

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

Adding to 20210220012101 its reverse (10121002201202), we get a palindrome (30331222213303).

The spelling of 20210220012101 in words is "twenty trillion, two hundred ten billion, two hundred twenty million, twelve thousand, one hundred one".