20020110121001 has 4 divisors (see below), whose sum is σ = 20027958069504. Its totient is φ = 20012262172500.

The previous prime is 20020110120961. The next prime is 20020110121003. The reversal of 20020110121001 is 10012101102002.

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.

It is a cyclic number.

It is not a de Polignac number, because 20020110121001 - 2⁴² = 15622063609897 is a prime.

It is a super-2 number, since 2×20020110121001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020110121003) 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, 3923970425 + ... + 3923975526.

It is an arithmetic number, because the mean of its divisors is an integer number (5006989517376).

Almost surely, 2^{20020110121001} is an apocalyptic number.

It is an amenable number.

20020110121001 is a deficient number, since it is larger than the sum of its proper divisors (7847948503).

20020110121001 is an equidigital number, since it uses as much as digits as its factorization.

20020110121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7847948502.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20020110121001 its reverse (10012101102002), we get a palindrome (30032211223003).

The spelling of 20020110121001 in words is "twenty trillion, twenty billion, one hundred ten million, one hundred twenty-one thousand, one".