102120212020 has 12 divisors (see below), whose sum is σ = 214452445284. Its totient is φ = 40848084800.

The previous prime is 102120212017. The next prime is 102120212021. The reversal of 102120212020 is 20212021201.

It is a happy number.

102120212020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 71180105616 + 30940106404 = 266796^2 + 175898^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120212021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2553005281 + ... + 2553005320.

It is an arithmetic number, because the mean of its divisors is an integer number (17871037107).

Almost surely, 2^102120212020 is an apocalyptic number.

102120212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102120212020 is an abundant number, since it is smaller than the sum of its proper divisors (112332233264).

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

102120212020 is a wasteful number, since it uses less digits than its factorization.

102120212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106010610 (or 5106010608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102120212020 its reverse (20212021201), we get a palindrome (122332233221).

The spelling of 102120212020 in words is "one hundred two billion, one hundred twenty million, two hundred twelve thousand, twenty".