102019109202 has 64 divisors (see below), whose sum is σ = 232672849920. Its totient is φ = 33123358800.

The previous prime is 102019109201. The next prime is 102019109221. The reversal of 102019109202 is 202901910201.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (102019109201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157927 + ... + 478517.

It is an arithmetic number, because the mean of its divisors is an integer number (3635513280).

Almost surely, 2^102019109202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102019109202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116336424960).

102019109202 is an abundant number, since it is smaller than the sum of its proper divisors (130653740718).

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

102019109202 is a wasteful number, since it uses less digits than its factorization.

102019109202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320756 (or 320750 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 102019109202 in words is "one hundred two billion, nineteen million, one hundred nine thousand, two hundred two".