102100221012021 has 8 divisors (see below), whose sum is σ = 136134695998080. Its totient is φ = 68066280016992.

The previous prime is 102100221012001. The next prime is 102100221012061. The reversal of 102100221012021 is 120210122001201.

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

It is not a de Polignac number, because 102100221012021 - 2⁴¹ = 99901197756469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100221012001) 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, 133051405 + ... + 133816578.

It is an arithmetic number, because the mean of its divisors is an integer number (17016836999760).

Almost surely, 2^{102100221012021} is an apocalyptic number.

It is an amenable number.

102100221012021 is a deficient number, since it is larger than the sum of its proper divisors (34034474986059).

102100221012021 is a wasteful number, since it uses less digits than its factorization.

102100221012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266995515.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102100221012021 its reverse (120210122001201), we get a palindrome (222310343013222).

The spelling of 102100221012021 in words is "one hundred two trillion, one hundred billion, two hundred twenty-one million, twelve thousand, twenty-one".