201261100 has 18 divisors (see below), whose sum is σ = 436736804. Its totient is φ = 80504400.

The previous prime is 201261089. The next prime is 201261103. The reversal of 201261100 is 1162102.

201261100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (201261103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1006206 + ... + 1006405.

Almost surely, 2^201261100 is an apocalyptic number.

201261100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201261100 is an abundant number, since it is smaller than the sum of its proper divisors (235475704).

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

201261100 is a wasteful number, since it uses less digits than its factorization.

201261100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012625 (or 2012618 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 201261100 is about 14186.6521773109. The cubic root of 201261100 is about 586.0301327561.

The spelling of 201261100 in words is "two hundred one million, two hundred sixty-one thousand, one hundred".