20101031301021 has 16 divisors (see below), whose sum is σ = 29859945919488. Its totient is φ = 11923242292400.

The previous prime is 20101031301011. The next prime is 20101031301047. The reversal of 20101031301021 is 12010313010102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20101031301021 - 2⁵ = 20101031300989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101031301011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6480021435 + ... + 6480024536.

It is an arithmetic number, because the mean of its divisors is an integer number (1866246619968).

Almost surely, 2^{20101031301021} is an apocalyptic number.

It is an amenable number.

20101031301021 is a deficient number, since it is larger than the sum of its proper divisors (9758914618467).

20101031301021 is a wasteful number, since it uses less digits than its factorization.

20101031301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960046032.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20101031301021 its reverse (12010313010102), we get a palindrome (32111344311123).

The spelling of 20101031301021 in words is "twenty trillion, one hundred one billion, thirty-one million, three hundred one thousand, twenty-one".