1021421424112 has 40 divisors (see below), whose sum is σ = 1993759891200. Its totient is φ = 506916672192.

The previous prime is 1021421424109. The next prime is 1021421424139. The reversal of 1021421424112 is 2114241241201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738939 + ... + 1608997.

It is an arithmetic number, because the mean of its divisors is an integer number (49843997280).

Almost surely, 2^{1021421424112} is an apocalyptic number.

It is an amenable number.

1021421424112 is a deficient number, since it is larger than the sum of its proper divisors (972338467088).

1021421424112 is a wasteful number, since it uses less digits than its factorization.

1021421424112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870613 (or 870607 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 1021421424112 its reverse (2114241241201), we get a palindrome (3135662665313).

The spelling of 1021421424112 in words is "one trillion, twenty-one billion, four hundred twenty-one million, four hundred twenty-four thousand, one hundred twelve".