201091102 has 4 divisors (see below), whose sum is σ = 301636656. Its totient is φ = 100545550.

The previous prime is 201091087. The next prime is 201091109. The reversal of 201091102 is 201190102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201091109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50272774 + ... + 50272777.

It is an arithmetic number, because the mean of its divisors is an integer number (75409164).

Almost surely, 2^201091102 is an apocalyptic number.

201091102 is a deficient number, since it is larger than the sum of its proper divisors (100545554).

201091102 is a wasteful number, since it uses less digits than its factorization.

201091102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100545553.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 201091102 is about 14180.6594345961. The cubic root of 201091102 is about 585.8650867648.

The spelling of 201091102 in words is "two hundred one million, ninety-one thousand, one hundred two".