121012110111 has 8 divisors (see below), whose sum is σ = 161357541120. Its totient is φ = 80670709592.

The previous prime is 121012110101. The next prime is 121012110143. The reversal of 121012110111 is 111011210121.

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

It is a cyclic number.

It is not a de Polignac number, because 121012110111 - 2⁷ = 121012109983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012110101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936855 + ... + 1058168.

It is an arithmetic number, because the mean of its divisors is an integer number (20169692640).

Almost surely, 2^121012110111 is an apocalyptic number.

121012110111 is a deficient number, since it is larger than the sum of its proper divisors (40345431009).

121012110111 is a wasteful number, since it uses less digits than its factorization.

121012110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015245.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121012110111 its reverse (111011210121), we get a palindrome (232023320232).

It can be divided in two parts, 12101 and 2110111, that added together give a palindrome (2122212).

The spelling of 121012110111 in words is "one hundred twenty-one billion, twelve million, one hundred ten thousand, one hundred eleven".