102020111010 has 32 divisors (see below), whose sum is σ = 272053630080. Its totient is φ = 27205362864.

The previous prime is 102020110999. The next prime is 102020111071. The reversal of 102020111010 is 10111020201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102020110983 and 102020111001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188925862 + ... + 188926401.

It is an arithmetic number, because the mean of its divisors is an integer number (8501675940).

Almost surely, 2^102020111010 is an apocalyptic number.

102020111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102020111010 is an abundant number, since it is smaller than the sum of its proper divisors (170033519070).

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

102020111010 is a wasteful number, since it uses less digits than its factorization.

102020111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377852279 (or 377852273 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 102020111010 its reverse (10111020201), we get a palindrome (112131131211).

The spelling of 102020111010 in words is "one hundred two billion, twenty million, one hundred eleven thousand, ten".