121231102 has 4 divisors (see below), whose sum is σ = 181846656. Its totient is φ = 60615550.

The previous prime is 121231093. The next prime is 121231133. The reversal of 121231102 is 201132121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201132121 = 59 ⋅3409019.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30307774 + ... + 30307777.

It is an arithmetic number, because the mean of its divisors is an integer number (45461664).

Almost surely, 2^121231102 is an apocalyptic number.

121231102 is a deficient number, since it is larger than the sum of its proper divisors (60615554).

121231102 is an equidigital number, since it uses as much as digits as its factorization.

121231102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60615553.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121231102 is about 11010.4996253576. The cubic root of 121231102 is about 494.9234340644.

Adding to 121231102 its reverse (201132121), we get a palindrome (322363223).

It can be divided in two parts, 12123 and 1102, that added together give a square (13225 = 115²).

The spelling of 121231102 in words is "one hundred twenty-one million, two hundred thirty-one thousand, one hundred two".