20010021222113 has 16 divisors (see below), whose sum is σ = 23603644950480. Its totient is φ = 16784814176256.

The previous prime is 20010021222047. The next prime is 20010021222119. The reversal of 20010021222113 is 31122212001002.

It can be written as a sum of positive squares in 8 ways, for example, as 3293960015329 + 16716061206784 = 1814927^2 + 4088528^2 .

It is not a de Polignac number, because 20010021222113 - 2⁸ = 20010021221857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010021222091 and 20010021222100.

It is not an unprimeable number, because it can be changed into a prime (20010021222119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1561081220 + ... + 1561094037.

It is an arithmetic number, because the mean of its divisors is an integer number (1475227809405).

Almost surely, 2^{20010021222113} is an apocalyptic number.

It is an amenable number.

20010021222113 is a deficient number, since it is larger than the sum of its proper divisors (3593623728367).

20010021222113 is a wasteful number, since it uses less digits than its factorization.

20010021222113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122175316.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20010021222113 its reverse (31122212001002), we get a palindrome (51132233223115).

The spelling of 20010021222113 in words is "twenty trillion, ten billion, twenty-one million, two hundred twenty-two thousand, one hundred thirteen".