801022020102 has 112 divisors (see below), whose sum is σ = 1811347668240. Its totient is φ = 265547289600.

The previous prime is 801022020067. The next prime is 801022020107. The reversal of 801022020102 is 201020220108.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801022020107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 523201077 + ... + 523202607.

Almost surely, 2^801022020102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 801022020102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905673834120).

801022020102 is an abundant number, since it is smaller than the sum of its proper divisors (1010325648138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

801022020102 is a wasteful number, since it uses less digits than its factorization.

801022020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281 (or 3266 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The spelling of 801022020102 in words is "eight hundred one billion, twenty-two million, twenty thousand, one hundred two".