121002201111 has 24 divisors (see below), whose sum is σ = 181460688640. Its totient is φ = 71629200720.

The previous prime is 121002201059. The next prime is 121002201137. The reversal of 121002201111 is 111102200121.

It is not a de Polignac number, because 121002201111 - 2¹⁷ = 121002070039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002201191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3860431 + ... + 3891648.

Almost surely, 2^121002201111 is an apocalyptic number.

121002201111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121002201111 is a deficient number, since it is larger than the sum of its proper divisors (60458487529).

121002201111 is a wasteful number, since it uses less digits than its factorization.

121002201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752147 (or 7752136 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121002201111 its reverse (111102200121), we get a palindrome (232104401232).

The spelling of 121002201111 in words is "one hundred twenty-one billion, two million, two hundred one thousand, one hundred eleven".