121101111002 has 4 divisors (see below), whose sum is σ = 181651666506. Its totient is φ = 60550555500.

The previous prime is 121101110987. The next prime is 121101111007. The reversal of 121101111002 is 200111101121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200111101121 = 163 ⋅1227675467.

It can be written as a sum of positive squares in only one way, i.e., 117992937001 + 3108174001 = 343501^2 + 55751^2 .

It is not an unprimeable number, because it can be changed into a prime (121101111007) by changing a digit.

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 as a sum of consecutive naturals, namely, 30275277749 + ... + 30275277752.

Almost surely, 2^121101111002 is an apocalyptic number.

121101111002 is a deficient number, since it is larger than the sum of its proper divisors (60550555504).

121101111002 is an equidigital number, since it uses as much as digits as its factorization.

121101111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60550555503.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121101111002 its reverse (200111101121), we get a palindrome (321212212123).

The spelling of 121101111002 in words is "one hundred twenty-one billion, one hundred one million, one hundred eleven thousand, two".