1301022100 has 36 divisors (see below), whose sum is σ = 3226536544. Its totient is φ = 446064480.

The previous prime is 1301022097. The next prime is 1301022109. The reversal of 1301022100 is 12201031.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301022109) 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, 928602 + ... + 930001.

Almost surely, 2^1301022100 is an apocalyptic number.

1301022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301022100 is an abundant number, since it is smaller than the sum of its proper divisors (1925514444).

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

1301022100 is a wasteful number, since it uses less digits than its factorization.

1301022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858624 (or 1858617 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1301022100 is about 36069.6839464945. The cubic root of 1301022100 is about 1091.6788370209.

Adding to 1301022100 its reverse (12201031), we get a palindrome (1313223131).

The spelling of 1301022100 in words is "one billion, three hundred one million, twenty-two thousand, one hundred".