102020211020 has 48 divisors (see below), whose sum is σ = 263683011648. Its totient is φ = 32287714560.

The previous prime is 102020210993. The next prime is 102020211043. The reversal of 102020211020 is 20112020201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102020210992 and 102020211010.

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, 28025711 + ... + 28029350.

It is an arithmetic number, because the mean of its divisors is an integer number (5493396076).

Almost surely, 2^102020211020 is an apocalyptic number.

102020211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102020211020 is an abundant number, since it is smaller than the sum of its proper divisors (161662800628).

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

102020211020 is a wasteful number, since it uses less digits than its factorization.

102020211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56055090 (or 56055088 counting only the distinct ones).

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

Adding to 102020211020 its reverse (20112020201), we get a palindrome (122132231221).

The spelling of 102020211020 in words is "one hundred two billion, twenty million, two hundred eleven thousand, twenty".