20122010021 has 8 divisors (see below), whose sum is σ = 21189160320. Its totient is φ = 19055669472.

The previous prime is 20122010011. The next prime is 20122010057. The reversal of 20122010021 is 12001022102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20122010021 - 2¹⁴ = 20121993637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20122009984 and 20122010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122010011) 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, 151085 + ... + 251138.

It is an arithmetic number, because the mean of its divisors is an integer number (2648645040).

Almost surely, 2^20122010021 is an apocalyptic number.

It is an amenable number.

20122010021 is a deficient number, since it is larger than the sum of its proper divisors (1067150299).

20122010021 is a wasteful number, since it uses less digits than its factorization.

20122010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404875.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20122010021 its reverse (12001022102), we get a palindrome (32123032123).

The spelling of 20122010021 in words is "twenty billion, one hundred twenty-two million, ten thousand, twenty-one".