2112021412431 has 32 divisors (see below), whose sum is σ = 3251737993728. Its totient is φ = 1194338856960.

The previous prime is 2112021412409. The next prime is 2112021412439. The reversal of 2112021412431 is 1342141202112.

It is not a de Polignac number, because 2112021412431 - 2¹¹ = 2112021410383 is a prime.

It is a super-2 number, since 2×2112021412431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112021412439) 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, 35501671 + ... + 35561111.

It is an arithmetic number, because the mean of its divisors is an integer number (101616812304).

Almost surely, 2^{2112021412431} is an apocalyptic number.

2112021412431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2112021412431 is a deficient number, since it is larger than the sum of its proper divisors (1139716581297).

2112021412431 is a wasteful number, since it uses less digits than its factorization.

2112021412431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76991.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 2112021412431 its reverse (1342141202112), we get a palindrome (3454162614543).

The spelling of 2112021412431 in words is "two trillion, one hundred twelve billion, twenty-one million, four hundred twelve thousand, four hundred thirty-one".