20221121010001 has 2 divisors, whose sum is σ = 20221121010002. Its totient is φ = 20221121010000.

The previous prime is 20221121009953. The next prime is 20221121010037. The reversal of 20221121010001 is 10001012112202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16931776550976 + 3289344459025 = 4114824^2 + 1813655^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221121010001 - 2²³ = 20221112621393 is a prime.

It is a super-2 number, since 2×20221121010001² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20221121011001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110560505000 + 10110560505001.

It is an arithmetic number, because the mean of its divisors is an integer number (10110560505001).

Almost surely, 2^{20221121010001} is an apocalyptic number.

It is an amenable number.

20221121010001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221121010001 is an equidigital number, since it uses as much as digits as its factorization.

20221121010001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20221121010001 its reverse (10001012112202), we get a palindrome (30222133122203).

The spelling of 20221121010001 in words is "twenty trillion, two hundred twenty-one billion, one hundred twenty-one million, ten thousand, one".