1020102101021 has 8 divisors (see below), whose sum is σ = 1037446949760. Its totient is φ = 1002759085152.

The previous prime is 1020102100937. The next prime is 1020102101033. The reversal of 1020102101021 is 1201012010201.

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 1020102101021 - 2²² = 1020097906717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020102100993 and 1020102101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020102101621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688556 + ... + 1585658.

It is an arithmetic number, because the mean of its divisors is an integer number (129680868720).

Almost surely, 2^{1020102101021} is an apocalyptic number.

It is an amenable number.

1020102101021 is a deficient number, since it is larger than the sum of its proper divisors (17344848739).

1020102101021 is an equidigital number, since it uses as much as digits as its factorization.

1020102101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916435.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1020102101021 its reverse (1201012010201), we get a palindrome (2221114111222).

The spelling of 1020102101021 in words is "one trillion, twenty billion, one hundred two million, one hundred one thousand, twenty-one".