1010010021 has 8 divisors (see below), whose sum is σ = 1347588000. Its totient is φ = 672886032.

The previous prime is 1010010019. The next prime is 1010010049. The reversal of 1010010021 is 1200100101.

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

It is not a de Polignac number, because 1010010021 - 2¹ = 1010010019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1010009991 and 1010010009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010010011) 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, 108271 + ... + 117228.

It is an arithmetic number, because the mean of its divisors is an integer number (168448500).

Almost surely, 2^1010010021 is an apocalyptic number.

It is an amenable number.

1010010021 is a deficient number, since it is larger than the sum of its proper divisors (337577979).

1010010021 is a wasteful number, since it uses less digits than its factorization.

1010010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226995.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1010010021 is about 31780.6548233355. The cubic root of 1010010021 is about 1003.3256017795.

Adding to 1010010021 its reverse (1200100101), we get a palindrome (2210110122).

The spelling of 1010010021 in words is "one billion, ten million, ten thousand, twenty-one".