4020123222 has 24 divisors (see below), whose sum is σ = 8755405464. Its totient is φ = 1333096704.

The previous prime is 4020123221. The next prime is 4020123251. The reversal of 4020123222 is 2223210204.

It is a super-2 number, since 2×4020123222² = 32322781440127322568, which contains 22 as substring.

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 = 4020123195 and 4020123204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020123221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 575128 + ... + 582075.

It is an arithmetic number, because the mean of its divisors is an integer number (364808561).

Almost surely, 2^4020123222 is an apocalyptic number.

4020123222 is an abundant number, since it is smaller than the sum of its proper divisors (4735282242).

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

4020123222 is a wasteful number, since it uses less digits than its factorization.

4020123222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157404 (or 1157401 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4020123222 is about 63404.4416582939. The cubic root of 4020123222 is about 1590.0585691016.

Adding to 4020123222 its reverse (2223210204), we get a palindrome (6243333426).

The spelling of 4020123222 in words is "four billion, twenty million, one hundred twenty-three thousand, two hundred twenty-two".