1201340100 has 72 divisors (see below), whose sum is σ = 3532912768. Its totient is φ = 315100800.

The previous prime is 1201340099. The next prime is 1201340111. The reversal of 1201340100 is 10431021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14524 + ... + 51123.

Almost surely, 2^1201340100 is an apocalyptic number.

1201340100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201340100 is an abundant number, since it is smaller than the sum of its proper divisors (2331572668).

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

1201340100 is a wasteful number, since it uses less digits than its factorization.

1201340100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65725 (or 65718 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1201340100 is about 34660.3534315506. The cubic root of 1201340100 is about 1063.0539966736.

Adding to 1201340100 its reverse (10431021), we get a palindrome (1211771121).

The spelling of 1201340100 in words is "one billion, two hundred one million, three hundred forty thousand, one hundred".