4220021202101 has 4 divisors (see below), whose sum is σ = 4220087438412. Its totient is φ = 4219954965792.

The previous prime is 4220021202043. The next prime is 4220021202119. The reversal of 4220021202101 is 1012021200224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 239992212100 + 3980028990001 = 489890^2 + 1995001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4220021202101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4220021202101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220021202301) 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, 33022496 + ... + 33150041.

It is an arithmetic number, because the mean of its divisors is an integer number (1055021859603).

Almost surely, 2^{4220021202101} is an apocalyptic number.

It is an amenable number.

4220021202101 is a deficient number, since it is larger than the sum of its proper divisors (66236311).

4220021202101 is an equidigital number, since it uses as much as digits as its factorization.

4220021202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66236310.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 4220021202101 its reverse (1012021200224), we get a palindrome (5232042402325).

The spelling of 4220021202101 in words is "four trillion, two hundred twenty billion, twenty-one million, two hundred two thousand, one hundred one".