2021021007 has 8 divisors (see below), whose sum is σ = 2694906240. Its totient is φ = 1347241560.

The previous prime is 2021020973. The next prime is 2021021021. The reversal of 2021021007 is 7001201202.

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

It is not a de Polignac number, because 2021021007 - 2⁶ = 2021020943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021021087) 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, 48382 + ... + 79892.

It is an arithmetic number, because the mean of its divisors is an integer number (336863280).

Almost surely, 2^2021021007 is an apocalyptic number.

2021021007 is a deficient number, since it is larger than the sum of its proper divisors (673885233).

2021021007 is a wasteful number, since it uses less digits than its factorization.

2021021007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52893.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 2021021007 is about 44955.7672273536. The cubic root of 2021021007 is about 1264.3198095108.

Adding to 2021021007 its reverse (7001201202), we get a palindrome (9022222209).

The spelling of 2021021007 in words is "two billion, twenty-one million, twenty-one thousand, seven".