2201220021021 has 16 divisors (see below), whose sum is σ = 3355093436928. Its totient is φ = 1257519985200.

The previous prime is 2201220021017. The next prime is 2201220021079. The reversal of 2201220021021 is 1201200221022.

2201220021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2201220021021 - 2² = 2201220021017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201220025021) 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, 13249935 + ... + 13415036.

It is an arithmetic number, because the mean of its divisors is an integer number (209693339808).

Almost surely, 2^{2201220021021} is an apocalyptic number.

2201220021021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2201220021021 is a deficient number, since it is larger than the sum of its proper divisors (1153873415907).

2201220021021 is a wasteful number, since it uses less digits than its factorization.

2201220021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26668912.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2201220021021 its reverse (1201200221022), we get a palindrome (3402420242043).

The spelling of 2201220021021 in words is "two trillion, two hundred one billion, two hundred twenty million, twenty-one thousand, twenty-one".