20010213320021 has 4 divisors (see below), whose sum is σ = 20110767156000. Its totient is φ = 19909659484044.

The previous prime is 20010213320011. The next prime is 20010213320077. The reversal of 20010213320021 is 12002331201002.

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 20010213320021 - 2²² = 20010209125717 is a prime.

It is a super-2 number, since 2×20010213320021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010213320011) 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, 50276917691 + ... + 50276918088.

It is an arithmetic number, because the mean of its divisors is an integer number (5027691789000).

Almost surely, 2^{20010213320021} is an apocalyptic number.

It is an amenable number.

20010213320021 is a deficient number, since it is larger than the sum of its proper divisors (100553835979).

20010213320021 is a wasteful number, since it uses less digits than its factorization.

20010213320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100553835978.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20010213320021 its reverse (12002331201002), we get a palindrome (32012544521023).

The spelling of 20010213320021 in words is "twenty trillion, ten billion, two hundred thirteen million, three hundred twenty thousand, twenty-one".