1061042109021 has 12 divisors (see below), whose sum is σ = 1541793725472. Its totient is φ = 703125707976.

The previous prime is 1061042109011. The next prime is 1061042109037. The reversal of 1061042109021 is 1209012401601.

1061042109021 is a `hidden beast` number, since 1 + 0 + 610 + 4 + 21 + 0 + 9 + 0 + 21 = 666.

It is not a de Polignac number, because 1061042109021 - 2⁶ = 1061042108957 is a prime.

It is a super-2 number, since 2×1061042109021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061042109011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352973251 + ... + 352976256.

It is an arithmetic number, because the mean of its divisors is an integer number (128482810456).

Almost surely, 2^{1061042109021} is an apocalyptic number.

It is an amenable number.

1061042109021 is a deficient number, since it is larger than the sum of its proper divisors (480751616451).

1061042109021 is a wasteful number, since it uses less digits than its factorization.

1061042109021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705949680 (or 705949677 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 1061042109021 in words is "one trillion, sixty-one billion, forty-two million, one hundred nine thousand, twenty-one".