2021222101 has 8 divisors (see below), whose sum is σ = 2036109600. Its totient is φ = 2006352528.

The previous prime is 2021222087. The next prime is 2021222111. The reversal of 2021222101 is 1012221202.

It is a happy number.

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 2021222101 - 2⁵ = 2021222069 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 (2021222111) 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, 292650 + ... + 299476.

It is an arithmetic number, because the mean of its divisors is an integer number (254513700).

Almost surely, 2^2021222101 is an apocalyptic number.

It is an amenable number.

2021222101 is a deficient number, since it is larger than the sum of its proper divisors (14887499).

2021222101 is a wasteful number, since it uses less digits than its factorization.

2021222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2021222101 is about 44958.0037479424. The cubic root of 2021222101 is about 1264.3617418963.

Adding to 2021222101 its reverse (1012221202), we get a palindrome (3033443303).

The spelling of 2021222101 in words is "two billion, twenty-one million, two hundred twenty-two thousand, one hundred one".