2021122021103 has 4 divisors (see below), whose sum is σ = 2021535427920. Its totient is φ = 2020708614288.

The previous prime is 2021122021099. The next prime is 2021122021129. The reversal of 2021122021103 is 3011202211202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021122021103 - 2² = 2021122021099 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 (2021122021133) 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, 206696075 + ... + 206705852.

It is an arithmetic number, because the mean of its divisors is an integer number (505383856980).

Almost surely, 2^{2021122021103} is an apocalyptic number.

2021122021103 is a deficient number, since it is larger than the sum of its proper divisors (413406817).

2021122021103 is an equidigital number, since it uses as much as digits as its factorization.

2021122021103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413406816.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2021122021103 its reverse (3011202211202), we get a palindrome (5032324232305).

The spelling of 2021122021103 in words is "two trillion, twenty-one billion, one hundred twenty-two million, twenty-one thousand, one hundred three".