220000121010 has 64 divisors (see below), whose sum is σ = 600975970560. Its totient is φ = 57235800960.

The previous prime is 220000120997. The next prime is 220000121017. The reversal of 220000121010 is 10121000022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 220000120983 and 220000121001.

It is not an unprimeable number, because it can be changed into a prime (220000121017) 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, 9925702 + ... + 9947841.

It is an arithmetic number, because the mean of its divisors is an integer number (9390249540).

Almost surely, 2^220000121010 is an apocalyptic number.

220000121010 is an abundant number, since it is smaller than the sum of its proper divisors (380975849550).

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

220000121010 is a wasteful number, since it uses less digits than its factorization.

220000121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19873600 (or 19873594 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 220000121010 its reverse (10121000022), we get a palindrome (230121121032).

The spelling of 220000121010 in words is "two hundred twenty billion, one hundred twenty-one thousand, ten".