102212220021 has 8 divisors (see below), whose sum is σ = 139966283424. Its totient is φ = 66299818320.

The previous prime is 102212220007. The next prime is 102212220067. The reversal of 102212220021 is 120022212201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102212220021 - 2¹⁸ = 102211957877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212220521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460415295 + ... + 460415516.

It is an arithmetic number, because the mean of its divisors is an integer number (17495785428).

Almost surely, 2^102212220021 is an apocalyptic number.

It is an amenable number.

102212220021 is a deficient number, since it is larger than the sum of its proper divisors (37754063403).

102212220021 is an equidigital number, since it uses as much as digits as its factorization.

102212220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920830851.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102212220021 its reverse (120022212201), we get a palindrome (222234432222).

The spelling of 102212220021 in words is "one hundred two billion, two hundred twelve million, two hundred twenty thousand, twenty-one".