112121010110021 has 16 divisors (see below), whose sum is σ = 122602357123200. Its totient is φ = 101687985347520.

The previous prime is 112121010110003. The next prime is 112121010110023. The reversal of 112121010110021 is 120011010121211.

It is not a de Polignac number, because 112121010110021 - 2¹⁴ = 112121010093637 is a prime.

It is a super-2 number, since 2×112121010110021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112121010109978 and 112121010110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121010110023) 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, 3718211 + ... + 15429423.

It is an arithmetic number, because the mean of its divisors is an integer number (7662647320200).

Almost surely, 2^{112121010110021} is an apocalyptic number.

112121010110021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112121010110021 is a deficient number, since it is larger than the sum of its proper divisors (10481347013179).

112121010110021 is a wasteful number, since it uses less digits than its factorization.

112121010110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11713276.

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

Adding to 112121010110021 its reverse (120011010121211), we get a palindrome (232132020231232).

The spelling of 112121010110021 in words is "one hundred twelve trillion, one hundred twenty-one billion, ten million, one hundred ten thousand, twenty-one".