102122012202021 has 32 divisors (see below), whose sum is σ = 175039623788800. Its totient is φ = 58355435535264.

The previous prime is 102122012202019. The next prime is 102122012202029. The reversal of 102122012202021 is 120202210221201.

It is a happy number.

102122012202021 is a `hidden beast` number, since 1 + 0 + 21 + 220 + 1 + 220 + 202 + 1 = 666.

It is not a de Polignac number, because 102122012202021 - 2¹ = 102122012202019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102122012201985 and 102122012202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102122012202029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3335343376 + ... + 3335373993.

It is an arithmetic number, because the mean of its divisors is an integer number (5469988243400).

Almost surely, 2^{102122012202021} is an apocalyptic number.

It is an amenable number.

102122012202021 is a deficient number, since it is larger than the sum of its proper divisors (72917611586779).

102122012202021 is an frugal number, since it uses more digits than its factorization.

102122012202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6670717397 (or 6670717379 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102122012202021 its reverse (120202210221201), we get a palindrome (222324222423222).

The spelling of 102122012202021 in words is "one hundred two trillion, one hundred twenty-two billion, twelve million, two hundred two thousand, twenty-one".