20112010021 has 8 divisors (see below), whose sum is σ = 21303463104. Its totient is φ = 18921489600.

The previous prime is 20112010019. The next prime is 20112010057. The reversal of 20112010021 is 12001021102.

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

It is not a de Polignac number, because 20112010021 - 2¹ = 20112010019 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 (20112010091) 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, 188515 + ... + 275248.

It is an arithmetic number, because the mean of its divisors is an integer number (2662932888).

Almost surely, 2^20112010021 is an apocalyptic number.

It is an amenable number.

20112010021 is a deficient number, since it is larger than the sum of its proper divisors (1191453083).

20112010021 is a wasteful number, since it uses less digits than its factorization.

20112010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466331.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20112010021 its reverse (12001021102), we get a palindrome (32113031123).

The spelling of 20112010021 in words is "twenty billion, one hundred twelve million, ten thousand, twenty-one".