223402121421220 has 36 divisors (see below), whose sum is σ = 545739468045660. Its totient is φ = 76595013058368.

The previous prime is 223402121421203. The next prime is 223402121421289. The reversal of 223402121421220 is 22124121204322.

223402121421220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 121213758322944 + 102188363098276 = 11009712^2 + 10108826^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113980673215 + ... + 113980675174.

It is an arithmetic number, because the mean of its divisors is an integer number (15159429667935).

Almost surely, 2^{223402121421220} is an apocalyptic number.

223402121421220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223402121421220 is an abundant number, since it is smaller than the sum of its proper divisors (322337346624440).

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

223402121421220 is a wasteful number, since it uses less digits than its factorization.

223402121421220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227961348412 (or 227961348403 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 223402121421220 its reverse (22124121204322), we get a palindrome (245526242625542).

The spelling of 223402121421220 in words is "two hundred twenty-three trillion, four hundred two billion, one hundred twenty-one million, four hundred twenty-one thousand, two hundred twenty".