223211021420 has 12 divisors (see below), whose sum is σ = 468743145024. Its totient is φ = 89284408560.

The previous prime is 223211021419. The next prime is 223211021477. The reversal of 223211021420 is 24120112322.

It is a super-3 number, since 3×223211021420³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 11160551071 = 223211021420 / (2 + 2 + 3 + 2 + 1 + 1 + 0 + 2 + 1 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 223211021392 and 223211021401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5580275516 + ... + 5580275555.

It is an arithmetic number, because the mean of its divisors is an integer number (39061928752).

Almost surely, 2^223211021420 is an apocalyptic number.

223211021420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223211021420 is an abundant number, since it is smaller than the sum of its proper divisors (245532123604).

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

223211021420 is a wasteful number, since it uses less digits than its factorization.

223211021420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11160551080 (or 11160551078 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 223211021420 its reverse (24120112322), we get a palindrome (247331133742).

The spelling of 223211021420 in words is "two hundred twenty-three billion, two hundred eleven million, twenty-one thousand, four hundred twenty".