102022201212121 has 10 divisors (see below), whose sum is σ = 105665846836322. Its totient is φ = 98504193590880.

The previous prime is 102022201212077. The next prime is 102022201212163. The reversal of 102022201212121 is 121212102220201.

It can be written as a sum of positive squares in 5 ways, for example, as 18006443560000 + 84015757652121 = 4243400^2 + 9166011^2 .

It is not a de Polignac number, because 102022201212121 - 2¹³ = 102022201203929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102022201218121) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 71415540 + ... + 72830101.

Almost surely, 2^{102022201212121} is an apocalyptic number.

It is an amenable number.

102022201212121 is a deficient number, since it is larger than the sum of its proper divisors (3643645624201).

102022201212121 is an frugal number, since it uses more digits than its factorization.

102022201212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144245757 (or 144245670 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102022201212121 its reverse (121212102220201), we get a palindrome (223234303432322).

The spelling of 102022201212121 in words is "one hundred two trillion, twenty-two billion, two hundred one million, two hundred twelve thousand, one hundred twenty-one".