2022201120721 has 2 divisors, whose sum is σ = 2022201120722. Its totient is φ = 2022201120720.

The previous prime is 2022201120703. The next prime is 2022201120781. The reversal of 2022201120721 is 1270211022202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1983534224400 + 38666896321 = 1408380^2 + 196639^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022201120721 - 2⁷ = 2022201120593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2022201120692 and 2022201120701.

It is not a weakly prime, because it can be changed into another prime (2022201120701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011100560360 + 1011100560361.

It is an arithmetic number, because the mean of its divisors is an integer number (1011100560361).

Almost surely, 2^{2022201120721} is an apocalyptic number.

It is an amenable number.

2022201120721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022201120721 is an equidigital number, since it uses as much as digits as its factorization.

2022201120721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 2022201120721 its reverse (1270211022202), we get a palindrome (3292412142923).

The spelling of 2022201120721 in words is "two trillion, twenty-two billion, two hundred one million, one hundred twenty thousand, seven hundred twenty-one".