4321021023012 has 48 divisors (see below), whose sum is σ = 10675913294592. Its totient is φ = 1355557347840.

The previous prime is 4321021022971. The next prime is 4321021023013. The reversal of 4321021023012 is 2103201201234.

It is a self number, because there is not a number n which added to its sum of digits gives 4321021023012.

It is not an unprimeable number, because it can be changed into a prime (4321021023013) 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, 4546437 + ... + 5414067.

It is an arithmetic number, because the mean of its divisors is an integer number (222414860304).

Almost surely, 2^{4321021023012} is an apocalyptic number.

It is an amenable number.

4321021023012 is an abundant number, since it is smaller than the sum of its proper divisors (6354892271580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4321021023012 is a wasteful number, since it uses less digits than its factorization.

4321021023012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892068 (or 892066 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 4321021023012 its reverse (2103201201234), we get a palindrome (6424222224246).

The spelling of 4321021023012 in words is "four trillion, three hundred twenty-one billion, twenty-one million, twenty-three thousand, twelve".