20000221121113 has 2 divisors, whose sum is σ = 20000221121114. Its totient is φ = 20000221121112.

The previous prime is 20000221121107. The next prime is 20000221121123. The reversal of 20000221121113 is 31112112200002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19834793455129 + 165427665984 = 4453627^2 + 406728^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000221121113 - 2¹⁷ = 20000220990041 is a prime.

It is a super-2 number, since 2×20000221121113² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20000221121123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000110560556 + 10000110560557.

It is an arithmetic number, because the mean of its divisors is an integer number (10000110560557).

Almost surely, 2^{20000221121113} is an apocalyptic number.

It is an amenable number.

20000221121113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000221121113 is an equidigital number, since it uses as much as digits as its factorization.

20000221121113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20000221121113 its reverse (31112112200002), we get a palindrome (51112333321115).

The spelling of 20000221121113 in words is "twenty trillion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred thirteen".