223121030202020 has 24 divisors (see below), whose sum is σ = 468670516750464. Its totient is φ = 89226249542496.

The previous prime is 223121030202017. The next prime is 223121030202047. The reversal of 223121030202020 is 20202030121322.

It is a happy number.

It is a super-3 number, since 3×223121030202020³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 223121030201983 and 223121030202001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385076092 + ... + 1385237171.

It is an arithmetic number, because the mean of its divisors is an integer number (19527938197936).

Almost surely, 2^{223121030202020} is an apocalyptic number.

223121030202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223121030202020 is an abundant number, since it is smaller than the sum of its proper divisors (245549486548444).

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

223121030202020 is a wasteful number, since it uses less digits than its factorization.

223121030202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770317299 (or 2770317297 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 223121030202020 its reverse (20202030121322), we get a palindrome (243323060323342).

The spelling of 223121030202020 in words is "two hundred twenty-three trillion, one hundred twenty-one billion, thirty million, two hundred two thousand, twenty".