2121400242412 has 12 divisors (see below), whose sum is σ = 4049945917416. Its totient is φ = 964272837440.

The previous prime is 2121400242391. The next prime is 2121400242443. The reversal of 2121400242412 is 2142420041212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24106820893 + ... + 24106820980.

It is an arithmetic number, because the mean of its divisors is an integer number (337495493118).

Almost surely, 2^{2121400242412} is an apocalyptic number.

2121400242412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121400242412 is a deficient number, since it is larger than the sum of its proper divisors (1928545675004).

2121400242412 is a wasteful number, since it uses less digits than its factorization.

2121400242412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48213641888 (or 48213641886 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 2121400242412 its reverse (2142420041212), we get a palindrome (4263820283624).

The spelling of 2121400242412 in words is "two trillion, one hundred twenty-one billion, four hundred million, two hundred forty-two thousand, four hundred twelve".