222011020020121 has 4 divisors (see below), whose sum is σ = 222012009779200. Its totient is φ = 222010030261044.

The previous prime is 222011020020103. The next prime is 222011020020133. The reversal of 222011020020121 is 121020020110222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222011020020121 - 2²⁵ = 222010986465689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222011020020095 and 222011020020104.

It is not an unprimeable number, because it can be changed into a prime (222011020020421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494543001 + ... + 494991718.

It is an arithmetic number, because the mean of its divisors is an integer number (55503002444800).

Almost surely, 2^{222011020020121} is an apocalyptic number.

It is an amenable number.

222011020020121 is a deficient number, since it is larger than the sum of its proper divisors (989759079).

222011020020121 is an equidigital number, since it uses as much as digits as its factorization.

222011020020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989759078.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222011020020121 its reverse (121020020110222), we get a palindrome (343031040130343).

The spelling of 222011020020121 in words is "two hundred twenty-two trillion, eleven billion, twenty million, twenty thousand, one hundred twenty-one".