20122023220 has 48 divisors (see below), whose sum is σ = 45517127040. Its totient is φ = 7427972736.

The previous prime is 20122023217. The next prime is 20122023307. The reversal of 20122023220 is 2232022102.

It is a junction number, because it is equal to n+sod(n) for n = 20122023194 and 20122023203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2065521 + ... + 2075239.

It is an arithmetic number, because the mean of its divisors is an integer number (948273480).

Almost surely, 2^20122023220 is an apocalyptic number.

20122023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122023220 is an abundant number, since it is smaller than the sum of its proper divisors (25395103820).

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

20122023220 is a wasteful number, since it uses less digits than its factorization.

20122023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17704 (or 17702 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20122023220 its reverse (2232022102), we get a palindrome (22354045322).

The spelling of 20122023220 in words is "twenty billion, one hundred twenty-two million, twenty-three thousand, two hundred twenty".