1010021101 has 4 divisors (see below), whose sum is σ = 1034655804. Its totient is φ = 985386400.

The previous prime is 1010021099. The next prime is 1010021123. The reversal of 1010021101 is 1011200101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1011200101 = 29 ⋅34868969.

It can be written as a sum of positive squares in 2 ways, for example, as 276423876 + 733597225 = 16626^2 + 27085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010021101 - 2¹ = 1010021099 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 (1010021161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12317290 + ... + 12317371.

It is an arithmetic number, because the mean of its divisors is an integer number (258663951).

Almost surely, 2^1010021101 is an apocalyptic number.

It is an amenable number.

1010021101 is a deficient number, since it is larger than the sum of its proper divisors (24634703).

1010021101 is an equidigital number, since it uses as much as digits as its factorization.

1010021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24634702.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1010021101 is about 31780.8291427395. The cubic root of 1010021101 is about 1003.3292706563.

Adding to 1010021101 its reverse (1011200101), we get a palindrome (2021221202).

The spelling of 1010021101 in words is "one billion, ten million, twenty-one thousand, one hundred one".