102011202020 has 72 divisors (see below), whose sum is σ = 265108463424. Its totient is φ = 32284856448.

The previous prime is 102011201987. The next prime is 102011202037. The reversal of 102011202020 is 20202110201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102011201992 and 102011202010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2132114 + ... + 2179433.

It is an arithmetic number, because the mean of its divisors is an integer number (3682061992).

Almost surely, 2^102011202020 is an apocalyptic number.

102011202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102011202020 is an abundant number, since it is smaller than the sum of its proper divisors (163097261404).

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

102011202020 is a wasteful number, since it uses less digits than its factorization.

102011202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311589 (or 4311574 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102011202020 its reverse (20202110201), we get a palindrome (122213312221).

The spelling of 102011202020 in words is "one hundred two billion, eleven million, two hundred two thousand, twenty".