102102122212020 has 72 divisors (see below), whose sum is σ = 353954023672704. Its totient is φ = 23337627933888.

The previous prime is 102102122211911. The next prime is 102102122212049. The reversal of 102102122212020 is 20212221201201.

It is a happy number.

102102122212020 is a `hidden beast` number, since 1 + 0 + 210 + 212 + 221 + 2 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102102122211984 and 102102122212002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40516713904 + ... + 40516716423.

Almost surely, 2^{102102122212020} is an apocalyptic number.

102102122212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102102122212020 is an abundant number, since it is smaller than the sum of its proper divisors (251851901460684).

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

102102122212020 is a wasteful number, since it uses less digits than its factorization.

102102122212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81033430349 (or 81033430344 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102102122212020 its reverse (20212221201201), we get a palindrome (122314343413221).

The spelling of 102102122212020 in words is "one hundred two trillion, one hundred two billion, one hundred twenty-two million, two hundred twelve thousand, twenty".