220211122021 has 8 divisors (see below), whose sum is σ = 254361510144. Its totient is φ = 188415933120.

The previous prime is 220211122009. The next prime is 220211122127. The reversal of 220211122021 is 120221112022.

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 220211122021 - 2⁵ = 220211121989 is a prime.

It is a super-2 number, since 2×220211122021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220211121986 and 220211122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220211125021) 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, 588799605 + ... + 588799978.

It is an arithmetic number, because the mean of its divisors is an integer number (31795188768).

Almost surely, 2^220211122021 is an apocalyptic number.

It is an amenable number.

220211122021 is a deficient number, since it is larger than the sum of its proper divisors (34150388123).

220211122021 is a wasteful number, since it uses less digits than its factorization.

220211122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177599611.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220211122021 its reverse (120221112022), we get a palindrome (340432234043).

Subtracting from 220211122021 its reverse (120221112022), we obtain a palindrome (99990009999).

The spelling of 220211122021 in words is "two hundred twenty billion, two hundred eleven million, one hundred twenty-two thousand, twenty-one".