111222101202121 has 32 divisors (see below), whose sum is σ = 145182070752768. Its totient is φ = 82793922647040.

The previous prime is 111222101202103. The next prime is 111222101202221. The reversal of 111222101202121 is 121202101222111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111222101202121 - 2¹⁹ = 111222100677833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111222101202221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435446416 + ... + 435701761.

It is an arithmetic number, because the mean of its divisors is an integer number (4536939711024).

Almost surely, 2^{111222101202121} is an apocalyptic number.

It is an amenable number.

111222101202121 is a deficient number, since it is larger than the sum of its proper divisors (33959969550647).

111222101202121 is a wasteful number, since it uses less digits than its factorization.

111222101202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871148281.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111222101202121 its reverse (121202101222111), we get a palindrome (232424202424232).

The spelling of 111222101202121 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred one million, two hundred two thousand, one hundred twenty-one".