2021221100101 has 8 divisors (see below), whose sum is σ = 2337797899584. Its totient is φ = 1711602032640.

The previous prime is 2021221100047. The next prime is 2021221100153. The reversal of 2021221100101 is 1010011221202.

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 2021221100101 - 2¹³ = 2021221091909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021221104101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1739432380 + ... + 1739433541.

It is an arithmetic number, because the mean of its divisors is an integer number (292224737448).

Almost surely, 2^{2021221100101} is an apocalyptic number.

It is an amenable number.

2021221100101 is a deficient number, since it is larger than the sum of its proper divisors (316576799483).

2021221100101 is an equidigital number, since it uses as much as digits as its factorization.

2021221100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478866011.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2021221100101 its reverse (1010011221202), we get a palindrome (3031232321303).

The spelling of 2021221100101 in words is "two trillion, twenty-one billion, two hundred twenty-one million, one hundred thousand, one hundred one".