220210021121 has 4 divisors (see below), whose sum is σ = 220257250752. Its totient is φ = 220162791492.

The previous prime is 220210021099. The next prime is 220210021123. The reversal of 220210021121 is 121120012022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220210021121 - 2¹⁴ = 220210004737 is a prime.

It is a super-2 number, since 2×220210021121² (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 = 220210021096 and 220210021105.

It is not an unprimeable number, because it can be changed into a prime (220210021123) 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, 23607821 + ... + 23617146.

It is an arithmetic number, because the mean of its divisors is an integer number (55064312688).

Almost surely, 2^220210021121 is an apocalyptic number.

It is an amenable number.

220210021121 is a deficient number, since it is larger than the sum of its proper divisors (47229631).

220210021121 is an equidigital number, since it uses as much as digits as its factorization.

220210021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47229630.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220210021121 its reverse (121120012022), we get a palindrome (341330033143).

Subtracting from 220210021121 its reverse (121120012022), we obtain a palindrome (99090009099).

The spelling of 220210021121 in words is "two hundred twenty billion, two hundred ten million, twenty-one thousand, one hundred twenty-one".