121222411455 has 16 divisors (see below), whose sum is σ = 193962345984. Its totient is φ = 64649790240.

The previous prime is 121222411403. The next prime is 121222411469. The reversal of 121222411455 is 554114222121.

It is not a de Polignac number, because 121222411455 - 2⁶ = 121222411391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395422 + ... + 631508.

It is an arithmetic number, because the mean of its divisors is an integer number (12122646624).

Almost surely, 2^121222411455 is an apocalyptic number.

121222411455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121222411455 is a deficient number, since it is larger than the sum of its proper divisors (72739934529).

121222411455 is a wasteful number, since it uses less digits than its factorization.

121222411455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270326.

The product of its digits is 6400, while the sum is 30.

Adding to 121222411455 its reverse (554114222121), we get a palindrome (675336633576).

The spelling of 121222411455 in words is "one hundred twenty-one billion, two hundred twenty-two million, four hundred eleven thousand, four hundred fifty-five".