2220021220021 has 8 divisors (see below), whose sum is σ = 2473369870464. Its totient is φ = 1975260659520.

The previous prime is 2220021220009. The next prime is 2220021220091. The reversal of 2220021220021 is 1200221200222.

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 2220021220021 - 2¹⁵ = 2220021187253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220021219977 and 2220021220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220021220091) 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, 2147021940 + ... + 2147022973.

It is an arithmetic number, because the mean of its divisors is an integer number (309171233808).

Almost surely, 2^{2220021220021} is an apocalyptic number.

It is an amenable number.

2220021220021 is a deficient number, since it is larger than the sum of its proper divisors (253348650443).

2220021220021 is a wasteful number, since it uses less digits than its factorization.

2220021220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4294044971.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2220021220021 its reverse (1200221200222), we get a palindrome (3420242420243).

The spelling of 2220021220021 in words is "two trillion, two hundred twenty billion, twenty-one million, two hundred twenty thousand, twenty-one".