102021221012 has 24 divisors (see below), whose sum is σ = 187944556800. Its totient is φ = 48323082816.

The previous prime is 102021220979. The next prime is 102021221021. The reversal of 102021221012 is 210122120201.

It is a super-3 number, since 3×102021221012³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2035064 + ... + 2084592.

It is an arithmetic number, because the mean of its divisors is an integer number (7831023200).

Almost surely, 2^102021221012 is an apocalyptic number.

It is an amenable number.

102021221012 is a deficient number, since it is larger than the sum of its proper divisors (85923335788).

102021221012 is a wasteful number, since it uses less digits than its factorization.

102021221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76655 (or 76653 counting only the distinct ones).

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

Adding to 102021221012 its reverse (210122120201), we get a palindrome (312143341213).

The spelling of 102021221012 in words is "one hundred two billion, twenty-one million, two hundred twenty-one thousand, twelve".