121011011021201 has 16 divisors (see below), whose sum is σ = 146436173968896. Its totient is φ = 97620540458496.

The previous prime is 121011011021179. The next prime is 121011011021209. The reversal of 121011011021201 is 102120110110121.

It is a cyclic number.

It is not a de Polignac number, because 121011011021201 - 2⁶ = 121011011021137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121011011021209) 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, 2766596 + ... + 15801141.

It is an arithmetic number, because the mean of its divisors is an integer number (9152260873056).

Almost surely, 2^{121011011021201} is an apocalyptic number.

It is an amenable number.

121011011021201 is a deficient number, since it is larger than the sum of its proper divisors (25425162947695).

121011011021201 is a wasteful number, since it uses less digits than its factorization.

121011011021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18622528.

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

Adding to 121011011021201 its reverse (102120110110121), we get a palindrome (223131121131322).

The spelling of 121011011021201 in words is "one hundred twenty-one trillion, eleven billion, eleven million, twenty-one thousand, two hundred one".