1202023220 has 48 divisors (see below), whose sum is σ = 2683497600. Its totient is φ = 450979200.

The previous prime is 1202023189. The next prime is 1202023253. The reversal of 1202023220 is 223202021.

It is a junction number, because it is equal to n+sod(n) for n = 1202023195 and 1202023204.

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, 22721 + ... + 54039.

It is an arithmetic number, because the mean of its divisors is an integer number (55906200).

Almost surely, 2^1202023220 is an apocalyptic number.

1202023220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1202023220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1341748800).

1202023220 is an abundant number, since it is smaller than the sum of its proper divisors (1481474380).

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

1202023220 is a wasteful number, since it uses less digits than its factorization.

1202023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31448 (or 31446 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1202023220 is about 34670.2065179889. The cubic root of 1202023220 is about 1063.2554538752.

Adding to 1202023220 its reverse (223202021), we get a palindrome (1425225241).

The spelling of 1202023220 in words is "one billion, two hundred two million, twenty-three thousand, two hundred twenty".