121212222211201 has 16 divisors (see below), whose sum is σ = 132483741940800. Its totient is φ = 109982871662400.

The previous prime is 121212222211183. The next prime is 121212222211271. The reversal of 121212222211201 is 102112222212121.

It is not a de Polignac number, because 121212222211201 - 2¹⁵ = 121212222178433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121212222211271) 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, 15178155 + ... + 21743983.

It is an arithmetic number, because the mean of its divisors is an integer number (8280233871300).

Almost surely, 2^{121212222211201} is an apocalyptic number.

121212222211201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121212222211201 is a deficient number, since it is larger than the sum of its proper divisors (11271519729599).

121212222211201 is a wasteful number, since it uses less digits than its factorization.

121212222211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6569040.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 121212222211201 its reverse (102112222212121), we get a palindrome (223324444423322).

The spelling of 121212222211201 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred twenty-two million, two hundred eleven thousand, two hundred one".