201321100990 has 16 divisors (see below), whose sum is σ = 362383385760. Its totient is φ = 80527239520.

The previous prime is 201321100979. The next prime is 201321100991. The reversal of 201321100990 is 99001123102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201321100991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911556 + ... + 1110664.

It is an arithmetic number, because the mean of its divisors is an integer number (22648961610).

Almost surely, 2^201321100990 is an apocalyptic number.

201321100990 is a deficient number, since it is larger than the sum of its proper divisors (161062284770).

201321100990 is a wasteful number, since it uses less digits than its factorization.

201321100990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300227.

The product of its (nonzero) digits is 972, while the sum is 28.

The spelling of 201321100990 in words is "two hundred one billion, three hundred twenty-one million, one hundred thousand, nine hundred ninety".