121201020002111 has 16 divisors (see below), whose sum is σ = 140310178775040. Its totient is φ = 102541318701120.

The previous prime is 121201020002099. The next prime is 121201020002129. The reversal of 121201020002111 is 111200020102121.

It is a cyclic number.

It is not a de Polignac number, because 121201020002111 - 2¹⁸ = 121201019739967 is a prime.

It is a super-2 number, since 2×121201020002111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201020002171) 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, 30441206 + ... + 34191651.

It is an arithmetic number, because the mean of its divisors is an integer number (8769386173440).

Almost surely, 2^{121201020002111} is an apocalyptic number.

121201020002111 is a deficient number, since it is larger than the sum of its proper divisors (19109158772929).

121201020002111 is an equidigital number, since it uses as much as digits as its factorization.

121201020002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64636334.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121201020002111 its reverse (111200020102121), we get a palindrome (232401040104232).

The spelling of 121201020002111 in words is "one hundred twenty-one trillion, two hundred one billion, twenty million, two thousand, one hundred eleven".