1021442123100 has 72 divisors (see below), whose sum is σ = 3377568627328. Its totient is φ = 233472484800.

The previous prime is 1021442123083. The next prime is 1021442123111. The reversal of 1021442123100 is 13212441201.

It is a super-2 number, since 2×1021442123100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243198406 + ... + 243202605.

Almost surely, 2^{1021442123100} is an apocalyptic number.

1021442123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021442123100 is an abundant number, since it is smaller than the sum of its proper divisors (2356126504228).

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

1021442123100 is a wasteful number, since it uses less digits than its factorization.

1021442123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486401035 (or 486401028 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1021442123100 its reverse (13212441201), we get a palindrome (1034654564301).

The spelling of 1021442123100 in words is "one trillion, twenty-one billion, four hundred forty-two million, one hundred twenty-three thousand, one hundred".