121111321010 has 8 divisors (see below), whose sum is σ = 218000377836. Its totient is φ = 48444528400.

The previous prime is 121111320991. The next prime is 121111321117. The reversal of 121111321010 is 10123111121.

It can be written as a sum of positive squares in 2 ways, for example, as 116227128241 + 4884192769 = 340921^2 + 69887^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6055566041 + ... + 6055566060.

Almost surely, 2^121111321010 is an apocalyptic number.

121111321010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111321010 is a deficient number, since it is larger than the sum of its proper divisors (96889056826).

121111321010 is a wasteful number, since it uses less digits than its factorization.

121111321010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12111132108.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 121111321010 its reverse (10123111121), we get a palindrome (131234432131).

The spelling of 121111321010 in words is "one hundred twenty-one billion, one hundred eleven million, three hundred twenty-one thousand, ten".