1021203260 has 192 divisors, whose sum is σ = 2981422080. Its totient is φ = 283668480.

The previous prime is 1021203191. The next prime is 1021203283. The reversal of 1021203260 is 623021201.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 496394 + ... + 498446.

It is an arithmetic number, because the mean of its divisors is an integer number (15528240).

Almost surely, 2^1021203260 is an apocalyptic number.

1021203260 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 1021203260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1490711040).

1021203260 is an abundant number, since it is smaller than the sum of its proper divisors (1960218820).

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

1021203260 is a wasteful number, since it uses less digits than its factorization.

1021203260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116 (or 2114 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1021203260 is about 31956.2710590582. The cubic root of 1021203260 is about 1007.0183804331.

Adding to 1021203260 its reverse (623021201), we get a palindrome (1644224461).

The spelling of 1021203260 in words is "one billion, twenty-one million, two hundred three thousand, two hundred sixty".