222010221020 has 96 divisors (see below), whose sum is σ = 548085920256. Its totient is φ = 73967673600.

The previous prime is 222010220989. The next prime is 222010221029. The reversal of 222010221020 is 20122010222.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 222010220986 and 222010221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222010221029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 552215 + ... + 865425.

It is an arithmetic number, because the mean of its divisors is an integer number (5709228336).

Almost surely, 2^222010221020 is an apocalyptic number.

222010221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222010221020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274042960128).

222010221020 is an abundant number, since it is smaller than the sum of its proper divisors (326075699236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222010221020 is a wasteful number, since it uses less digits than its factorization.

222010221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313371 (or 313369 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222010221020 its reverse (20122010222), we get a palindrome (242132231242).

The spelling of 222010221020 in words is "two hundred twenty-two billion, ten million, two hundred twenty-one thousand, twenty".