222011021021 has 16 divisors (see below), whose sum is σ = 232337427840. Its totient is φ = 211869940800.

The previous prime is 222011020997. The next prime is 222011021051. The reversal of 222011021021 is 120120110222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222011021021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222011020987 and 222011021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222011021051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1654760 + ... + 1783886.

It is an arithmetic number, because the mean of its divisors is an integer number (14521089240).

Almost surely, 2^222011021021 is an apocalyptic number.

It is an amenable number.

222011021021 is a deficient number, since it is larger than the sum of its proper divisors (10326406819).

222011021021 is a wasteful number, since it uses less digits than its factorization.

222011021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129844.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 222011021021 its reverse (120120110222), we get a palindrome (342131131243).

The spelling of 222011021021 in words is "two hundred twenty-two billion, eleven million, twenty-one thousand, twenty-one".