102011222121 has 48 divisors (see below), whose sum is σ = 147457228800. Its totient is φ = 62650215936.

The previous prime is 102011222113. The next prime is 102011222143. The reversal of 102011222121 is 121222110201.

It is not a de Polignac number, because 102011222121 - 2³ = 102011222113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102011222121.

It is not an unprimeable number, because it can be changed into a prime (102011222111) 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 47 ways as a sum of consecutive naturals, for example, 19925400 + ... + 19930518.

It is an arithmetic number, because the mean of its divisors is an integer number (3072025600).

Almost surely, 2^102011222121 is an apocalyptic number.

It is an amenable number.

102011222121 is a deficient number, since it is larger than the sum of its proper divisors (45446006679).

102011222121 is a wasteful number, since it uses less digits than its factorization.

102011222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630 (or 5607 counting only the distinct ones).

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

Adding to 102011222121 its reverse (121222110201), we get a palindrome (223233332322).

The spelling of 102011222121 in words is "one hundred two billion, eleven million, two hundred twenty-two thousand, one hundred twenty-one".