102220300121 has 4 divisors (see below), whose sum is σ = 102343606500. Its totient is φ = 102096993744.

The previous prime is 102220300111. The next prime is 102220300139. The reversal of 102220300121 is 121003022201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51171416521 + 51048883600 = 226211^2 + 225940^2 .

It is a cyclic number.

It is not a de Polignac number, because 102220300121 - 2³⁰ = 101146558297 is a prime.

It is a super-2 number, since 2×102220300121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102220300096 and 102220300105.

It is not an unprimeable number, because it can be changed into a prime (102220300111) 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, 61651946 + ... + 61653603.

It is an arithmetic number, because the mean of its divisors is an integer number (25585901625).

Almost surely, 2^102220300121 is an apocalyptic number.

It is an amenable number.

102220300121 is a deficient number, since it is larger than the sum of its proper divisors (123306379).

102220300121 is an equidigital number, since it uses as much as digits as its factorization.

102220300121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123306378.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102220300121 its reverse (121003022201), we get a palindrome (223223322322).

The spelling of 102220300121 in words is "one hundred two billion, two hundred twenty million, three hundred thousand, one hundred twenty-one".