121000010111111 has 8 divisors (see below), whose sum is σ = 122531880019200. Its totient is φ = 119468145808440.

The previous prime is 121000010111039. The next prime is 121000010111287. The reversal of 121000010111111 is 111111010000121.

It is a happy number.

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 121000010111111 - 2¹⁰ = 121000010110087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000010111092 and 121000010111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000010111311) 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, 57748196 + ... + 59806806.

It is an arithmetic number, because the mean of its divisors is an integer number (15316485002400).

Almost surely, 2^{121000010111111} is an apocalyptic number.

121000010111111 is a deficient number, since it is larger than the sum of its proper divisors (1531869908089).

121000010111111 is an equidigital number, since it uses as much as digits as its factorization.

121000010111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802709.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 121000010111111 its reverse (111111010000121), we get a palindrome (232111020111232).

It can be divided in two parts, 121000010 and 111111, that added together give a palindrome (121111121).

The spelling of 121000010111111 in words is "one hundred twenty-one trillion, ten million, one hundred eleven thousand, one hundred eleven".