102012100221 has 8 divisors (see below), whose sum is σ = 136038085920. Its totient is φ = 67997090672.

The previous prime is 102012100217. The next prime is 102012100249. The reversal of 102012100221 is 122001210201.

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

It is a cyclic number.

It is not a de Polignac number, because 102012100221 - 2² = 102012100217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102012100197 and 102012100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012100321) 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, 2722326 + ... + 2759543.

It is an arithmetic number, because the mean of its divisors is an integer number (17004760740).

Almost surely, 2^102012100221 is an apocalyptic number.

It is an amenable number.

102012100221 is a deficient number, since it is larger than the sum of its proper divisors (34025985699).

102012100221 is an equidigital number, since it uses as much as digits as its factorization.

102012100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5488075.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102012100221 its reverse (122001210201), we get a palindrome (224013310422).

The spelling of 102012100221 in words is "one hundred two billion, twelve million, one hundred thousand, two hundred twenty-one".