102021212120 has 64 divisors (see below), whose sum is σ = 241714216800. Its totient is φ = 38647065600.

The previous prime is 102021212077. The next prime is 102021212191. The reversal of 102021212120 is 21212120201.

It is a super-4 number, since 4×102021212120⁴ (a number of 45 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102021212095 and 102021212104.

It is a congruent number.

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, 2286020 + ... + 2330220.

Almost surely, 2^102021212120 is an apocalyptic number.

102021212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021212120 is an abundant number, since it is smaller than the sum of its proper divisors (139693004680).

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

102021212120 is a wasteful number, since it uses less digits than its factorization.

102021212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47268 (or 47264 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102021212120 its reverse (21212120201), we get a palindrome (123233332321).

The spelling of 102021212120 in words is "one hundred two billion, twenty-one million, two hundred twelve thousand, one hundred twenty".