20026032121 has 4 divisors (see below), whose sum is σ = 20026508112. Its totient is φ = 20025556132.

The previous prime is 20026032119. The next prime is 20026032137. The reversal of 20026032121 is 12123062002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12123062002 = 2 ⋅6061531001.

It is a cyclic number.

It is not a de Polignac number, because 20026032121 - 2¹ = 20026032119 is a prime.

It is a super-2 number, since 2×20026032121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20026032821) 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, 168031 + ... + 261316.

It is an arithmetic number, because the mean of its divisors is an integer number (5006627028).

Almost surely, 2^20026032121 is an apocalyptic number.

It is an amenable number.

20026032121 is a deficient number, since it is larger than the sum of its proper divisors (475991).

20026032121 is an equidigital number, since it uses as much as digits as its factorization.

20026032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475990.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20026032121 its reverse (12123062002), we get a palindrome (32149094123).

The spelling of 20026032121 in words is "twenty billion, twenty-six million, thirty-two thousand, one hundred twenty-one".