102122020111121 has 4 divisors (see below), whose sum is σ = 105643469080500. Its totient is φ = 98600571141744.

The previous prime is 102122020111087. The next prime is 102122020111123. The reversal of 102122020111121 is 121111020221201.

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 20302053408400 + 81819966702721 = 4505780^2 + 9045439^2 .

It is a cyclic number.

It is not a de Polignac number, because 102122020111121 - 2¹⁴ = 102122020094737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102122020111121.

It is not an unprimeable number, because it can be changed into a prime (102122020111123) 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, 1760724484646 + ... + 1760724484703.

It is an arithmetic number, because the mean of its divisors is an integer number (26410867270125).

Almost surely, 2^{102122020111121} is an apocalyptic number.

It is an amenable number.

102122020111121 is a deficient number, since it is larger than the sum of its proper divisors (3521448969379).

102122020111121 is an equidigital number, since it uses as much as digits as its factorization.

102122020111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521448969378.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102122020111121 its reverse (121111020221201), we get a palindrome (223233040332322).

The spelling of 102122020111121 in words is "one hundred two trillion, one hundred twenty-two billion, twenty million, one hundred eleven thousand, one hundred twenty-one".