121122101123 has 2 divisors, whose sum is σ = 121122101124. Its totient is φ = 121122101122.

The previous prime is 121122101101. The next prime is 121122101207. The reversal of 121122101123 is 321101221121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121122101123 - 2¹⁴ = 121122084739 is a prime.

It is a super-2 number, since 2×121122101123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121122101323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561050561 + 60561050562.

It is an arithmetic number, because the mean of its divisors is an integer number (60561050562).

Almost surely, 2^121122101123 is an apocalyptic number.

121122101123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122101123 is an equidigital number, since it uses as much as digits as its factorization.

121122101123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121122101123 its reverse (321101221121), we get a palindrome (442223322244).

The spelling of 121122101123 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred one thousand, one hundred twenty-three".