81201002 has 8 divisors (see below), whose sum is σ = 121936800. Its totient is φ = 40555404.

The previous prime is 81200963. The next prime is 81201049. The reversal of 81201002 is 20010218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20252 + ... + 23927.

It is an arithmetic number, because the mean of its divisors is an integer number (15242100).

Almost surely, 2^81201002 is an apocalyptic number.

81201002 is a deficient number, since it is larger than the sum of its proper divisors (40735798).

81201002 is a wasteful number, since it uses less digits than its factorization.

81201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45100.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 81201002 is about 9011.1598587529. The cubic root of 81201002 is about 433.0324705812.

The spelling of 81201002 in words is "eighty-one million, two hundred one thousand, two".