121010201020111 has 8 divisors (see below), whose sum is σ = 130321701068384. Its totient is φ = 111699132835680.

The previous prime is 121010201020061. The next prime is 121010201020117. The reversal of 121010201020111 is 111020102010121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121010201020111 - 2¹⁵ = 121010200987343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121010201020091 and 121010201020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010201020117) 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, 107383875 + ... + 108504916.

It is an arithmetic number, because the mean of its divisors is an integer number (16290212633548).

Almost surely, 2^{121010201020111} is an apocalyptic number.

121010201020111 is a deficient number, since it is larger than the sum of its proper divisors (9311500048273).

121010201020111 is a wasteful number, since it uses less digits than its factorization.

121010201020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215931921.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121010201020111 its reverse (111020102010121), we get a palindrome (232030303030232).

The spelling of 121010201020111 in words is "one hundred twenty-one trillion, ten billion, two hundred one million, twenty thousand, one hundred eleven".