20212007 has 4 divisors (see below), whose sum is σ = 20259120. Its totient is φ = 20164896.

The previous prime is 20212001. The next prime is 20212013. The reversal of 20212007 is 70021202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70021202 = 2 ⋅35010601.

It is an interprime number because it is at equal distance from previous prime (20212001) and next prime (20212013).

It is a cyclic number.

It is not a de Polignac number, because 20212007 - 2⁶ = 20211943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211982 and 20212000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212001) 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, 22907 + ... + 23772.

It is an arithmetic number, because the mean of its divisors is an integer number (5064780).

Almost surely, 2^20212007 is an apocalyptic number.

20212007 is a deficient number, since it is larger than the sum of its proper divisors (47113).

20212007 is an equidigital number, since it uses as much as digits as its factorization.

20212007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47112.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 20212007 is about 4495.7765736300. The cubic root of 20212007 is about 272.3975183471.

Adding to 20212007 its reverse (70021202), we get a palindrome (90233209).

The spelling of 20212007 in words is "twenty million, two hundred twelve thousand, seven".