1021002101 has 8 divisors (see below), whose sum is σ = 1207096320. Its totient is φ = 844967088.

The previous prime is 1021002091. The next prime is 1021002109. The reversal of 1021002101 is 1012001201.

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

It is not a de Polignac number, because 1021002101 - 2¹⁴ = 1020985717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021002109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2514581 + ... + 2514986.

It is an arithmetic number, because the mean of its divisors is an integer number (150887040).

Almost surely, 2^1021002101 is an apocalyptic number.

It is an amenable number.

1021002101 is a deficient number, since it is larger than the sum of its proper divisors (186094219).

1021002101 is an equidigital number, since it uses as much as digits as its factorization.

1021002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5029603.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1021002101 is about 31953.1234936430. The cubic root of 1021002101 is about 1006.9522544812.

Adding to 1021002101 its reverse (1012001201), we get a palindrome (2033003302).

The spelling of 1021002101 in words is "one billion, twenty-one million, two thousand, one hundred one".