102021212201 has 4 divisors (see below), whose sum is σ = 102024224400. Its totient is φ = 102018200004.

The previous prime is 102021212191. The next prime is 102021212221. The reversal of 102021212201 is 102212120201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102021212201 is a prime.

It is a super-2 number, since 2×102021212201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102021212221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454711 + ... + 1523228.

It is an arithmetic number, because the mean of its divisors is an integer number (25506056100).

Almost surely, 2^102021212201 is an apocalyptic number.

It is an amenable number.

102021212201 is a deficient number, since it is larger than the sum of its proper divisors (3012199).

102021212201 is an equidigital number, since it uses as much as digits as its factorization.

102021212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012198.

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

Adding to 102021212201 its reverse (102212120201), we get a palindrome (204233332402).

The spelling of 102021212201 in words is "one hundred two billion, twenty-one million, two hundred twelve thousand, two hundred one".