102211220121 has 8 divisors (see below), whose sum is σ = 144298193184. Its totient is φ = 64132530240.

The previous prime is 102211220113. The next prime is 102211220161. The reversal of 102211220121 is 121022112201.

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

It is not a de Polignac number, because 102211220121 - 2³ = 102211220113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102211220121.

It is not an unprimeable number, because it can be changed into a prime (102211220101) 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 7 ways as a sum of consecutive naturals, for example, 1002070735 + ... + 1002070836.

It is an arithmetic number, because the mean of its divisors is an integer number (18037274148).

Almost surely, 2^102211220121 is an apocalyptic number.

It is an amenable number.

102211220121 is a deficient number, since it is larger than the sum of its proper divisors (42086973063).

102211220121 is a wasteful number, since it uses less digits than its factorization.

102211220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004141591.

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

Adding to 102211220121 its reverse (121022112201), we get a palindrome (223233332322).

The spelling of 102211220121 in words is "one hundred two billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty-one".