9810021220102 has 4 divisors (see below), whose sum is σ = 14715031830156. Its totient is φ = 4905010610050.

The previous prime is 9810021220091. The next prime is 9810021220123. The reversal of 9810021220102 is 2010221200189.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2452505305024 + ... + 2452505305027.

It is an arithmetic number, because the mean of its divisors is an integer number (3678757957539).

Almost surely, 2^{9810021220102} is an apocalyptic number.

9810021220102 is a deficient number, since it is larger than the sum of its proper divisors (4905010610054).

9810021220102 is a wasteful number, since it uses less digits than its factorization.

9810021220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905010610053.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 9810021220102 in words is "nine trillion, eight hundred ten billion, twenty-one million, two hundred twenty thousand, one hundred two".