223310221020 has 36 divisors (see below), whose sum is σ = 677374337640. Its totient is φ = 59549392224.

The previous prime is 223310220997. The next prime is 223310221049. The reversal of 223310221020 is 20122013322.

223310221020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 223310220984 and 223310221002.

It is a congruent number.

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, 620305990 + ... + 620306349.

Almost surely, 2^223310221020 is an apocalyptic number.

223310221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223310221020 is an abundant number, since it is smaller than the sum of its proper divisors (454064116620).

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

223310221020 is a wasteful number, since it uses less digits than its factorization.

223310221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240612354 (or 1240612349 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 223310221020 its reverse (20122013322), we get a palindrome (243432234342).

The spelling of 223310221020 in words is "two hundred twenty-three billion, three hundred ten million, two hundred twenty-one thousand, twenty".