220102021121 has 12 divisors (see below), whose sum is σ = 233829197568. Its totient is φ = 207138541632.

The previous prime is 220102021109. The next prime is 220102021123. The reversal of 220102021121 is 121120201022.

It is a de Polignac number, because none of the positive numbers 2^k-220102021121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220102021096 and 220102021105.

It is not an unprimeable number, because it can be changed into a prime (220102021123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5264120 + ... + 5305766.

It is an arithmetic number, because the mean of its divisors is an integer number (19485766464).

Almost surely, 2^220102021121 is an apocalyptic number.

It is an amenable number.

220102021121 is a deficient number, since it is larger than the sum of its proper divisors (13727176447).

220102021121 is a wasteful number, since it uses less digits than its factorization.

220102021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59968 (or 59951 counting only the distinct ones).

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

Adding to 220102021121 its reverse (121120201022), we get a palindrome (341222222143).

The spelling of 220102021121 in words is "two hundred twenty billion, one hundred two million, twenty-one thousand, one hundred twenty-one".