102022111222121 has 4 divisors (see below), whose sum is σ = 103947056716932. Its totient is φ = 100097165727312.

The previous prime is 102022111222079. The next prime is 102022111222151. The reversal of 102022111222121 is 121222111220201.

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 58020593265625 + 44001517956496 = 7617125^2 + 6633364^2 .

It is a cyclic number.

It is not a de Polignac number, because 102022111222121 - 2¹⁰ = 102022111221097 is a prime.

It is a super-2 number, since 2×102022111222121² (a number of 29 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 = 102022111222093 and 102022111222102.

It is not an unprimeable number, because it can be changed into a prime (102022111222151) 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, 962472747326 + ... + 962472747431.

It is an arithmetic number, because the mean of its divisors is an integer number (25986764179233).

Almost surely, 2^{102022111222121} is an apocalyptic number.

It is an amenable number.

102022111222121 is a deficient number, since it is larger than the sum of its proper divisors (1924945494811).

102022111222121 is an equidigital number, since it uses as much as digits as its factorization.

102022111222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924945494810.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102022111222121 its reverse (121222111220201), we get a palindrome (223244222442322).

The spelling of 102022111222121 in words is "one hundred two trillion, twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty-one".