112121211021 has 8 divisors (see below), whose sum is σ = 149496915840. Its totient is φ = 74746490112.

The previous prime is 112121210959. The next prime is 112121211113. The reversal of 112121211021 is 120112121211.

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 112121211021 - 2²³ = 112112822413 is a prime.

It is a super-2 number, since 2×112121211021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121211421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82636 + ... + 480698.

It is an arithmetic number, because the mean of its divisors is an integer number (18687114480).

Almost surely, 2^112121211021 is an apocalyptic number.

It is an amenable number.

112121211021 is a deficient number, since it is larger than the sum of its proper divisors (37375704819).

112121211021 is an equidigital number, since it uses as much as digits as its factorization.

112121211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491955.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 112121211021 its reverse (120112121211), we get a palindrome (232233332232).

The spelling of 112121211021 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred eleven thousand, twenty-one".