1021042101 has 8 divisors (see below), whose sum is σ = 1365685344. Its totient is φ = 678546800.

The previous prime is 1021042097. The next prime is 1021042111. The reversal of 1021042101 is 1012401201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021042101 - 2² = 1021042097 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021042111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535875 + ... + 537776.

It is an arithmetic number, because the mean of its divisors is an integer number (170710668).

Almost surely, 2^1021042101 is an apocalyptic number.

It is an amenable number.

1021042101 is a deficient number, since it is larger than the sum of its proper divisors (344643243).

1021042101 is a wasteful number, since it uses less digits than its factorization.

1021042101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073971.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1021042101 is about 31953.7494044126. The cubic root of 1021042101 is about 1006.9654041650.

Adding to 1021042101 its reverse (1012401201), we get a palindrome (2033443302).

The spelling of 1021042101 in words is "one billion, twenty-one million, forty-two thousand, one hundred one".