121001021120111 has 16 divisors (see below), whose sum is σ = 134173432056096. Its totient is φ = 108190888080000.

The previous prime is 121001021120059. The next prime is 121001021120113. The reversal of 121001021120111 is 111021120100121.

It is not a de Polignac number, because 121001021120111 - 2⁶ = 121001021120047 is a prime.

It is a super-2 number, since 2×121001021120111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001021120113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5163041 + ... + 16390821.

It is an arithmetic number, because the mean of its divisors is an integer number (8385839503506).

Almost surely, 2^{121001021120111} is an apocalyptic number.

121001021120111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121001021120111 is a deficient number, since it is larger than the sum of its proper divisors (13172410935985).

121001021120111 is a wasteful number, since it uses less digits than its factorization.

121001021120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11243914.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121001021120111 its reverse (111021120100121), we get a palindrome (232022141220232).

The spelling of 121001021120111 in words is "one hundred twenty-one trillion, one billion, twenty-one million, one hundred twenty thousand, one hundred eleven".