2201121002021 has 16 divisors (see below), whose sum is σ = 2300225668608. Its totient is φ = 2103862118400.

The previous prime is 2201121002011. The next prime is 2201121002089. The reversal of 2201121002021 is 1202001211022.

It is a cyclic number.

It is not a de Polignac number, because 2201121002021 - 2⁶ = 2201121001957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201121001987 and 2201121002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201121002011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731021 + ... + 2221853.

It is an arithmetic number, because the mean of its divisors is an integer number (143764104288).

Almost surely, 2^{2201121002021} is an apocalyptic number.

It is an amenable number.

2201121002021 is a deficient number, since it is larger than the sum of its proper divisors (99104666587).

2201121002021 is a wasteful number, since it uses less digits than its factorization.

2201121002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491452.

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

Adding to 2201121002021 its reverse (1202001211022), we get a palindrome (3403122213043).

The spelling of 2201121002021 in words is "two trillion, two hundred one billion, one hundred twenty-one million, two thousand, twenty-one".