2121403244012 has 12 divisors (see below), whose sum is σ = 3998029190736. Its totient is φ = 979109189520.

The previous prime is 2121403243987. The next prime is 2121403244027. The reversal of 2121403244012 is 2104423041212.

It is a super-2 number, since 2×2121403244012² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 20398108064 + ... + 20398108167.

It is an arithmetic number, because the mean of its divisors is an integer number (333169099228).

Almost surely, 2^{2121403244012} is an apocalyptic number.

It is an amenable number.

2121403244012 is a deficient number, since it is larger than the sum of its proper divisors (1876625946724).

2121403244012 is a wasteful number, since it uses less digits than its factorization.

2121403244012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40796216248 (or 40796216246 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 2121403244012 its reverse (2104423041212), we get a palindrome (4225826285224).

The spelling of 2121403244012 in words is "two trillion, one hundred twenty-one billion, four hundred three million, two hundred forty-four thousand, twelve".