102001012221 has 8 divisors (see below), whose sum is σ = 137529455040. Its totient is φ = 67236622112.

The previous prime is 102001012103. The next prime is 102001012301. The reversal of 102001012221 is 122210100201.

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 102001012221 - 2³⁰ = 100927270397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102001012197 and 102001012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001017221) 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, 191012865 + ... + 191013398.

It is an arithmetic number, because the mean of its divisors is an integer number (17191181880).

Almost surely, 2^102001012221 is an apocalyptic number.

It is an amenable number.

102001012221 is a deficient number, since it is larger than the sum of its proper divisors (35528442819).

102001012221 is an equidigital number, since it uses as much as digits as its factorization.

102001012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382026355.

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

Adding to 102001012221 its reverse (122210100201), we get a palindrome (224211112422).

The spelling of 102001012221 in words is "one hundred two billion, one million, twelve thousand, two hundred twenty-one".