101091002 has 4 divisors (see below), whose sum is σ = 151636506. Its totient is φ = 50545500.

The previous prime is 101090999. The next prime is 101091103. The reversal of 101091002 is 200190101.

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

It can be written as a sum of positive squares in only one way, i.e., 72777961 + 28313041 = 8531^2 + 5321^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25272749 + ... + 25272752.

Almost surely, 2^101091002 is an apocalyptic number.

101091002 is a deficient number, since it is larger than the sum of its proper divisors (50545504).

101091002 is an equidigital number, since it uses as much as digits as its factorization.

101091002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50545503.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 101091002 is about 10054.4021204644. The cubic root of 101091002 is about 465.8407758500.

Subtracting 101091002 from its reverse (200190101), we obtain a palindrome (99099099).

It can be divided in two parts, 10109 and 1002, that added together give a palindrome (11111).

The spelling of 101091002 in words is "one hundred one million, ninety-one thousand, two".