222121012020011 has 4 divisors (see below), whose sum is σ = 239207243713872. Its totient is φ = 205034780326152.

The previous prime is 222121012019969. The next prime is 222121012020013. The reversal of 222121012020011 is 110020210121222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222121012020011 - 2⁴⁶ = 151752267842347 is a prime.

It is a super-2 number, since 2×222121012020011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222121012020013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8543115846911 + ... + 8543115846936.

It is an arithmetic number, because the mean of its divisors is an integer number (59801810928468).

Almost surely, 2^{222121012020011} is an apocalyptic number.

222121012020011 is a deficient number, since it is larger than the sum of its proper divisors (17086231693861).

222121012020011 is a wasteful number, since it uses less digits than its factorization.

222121012020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17086231693860.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222121012020011 its reverse (110020210121222), we get a palindrome (332141222141233).

The spelling of 222121012020011 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twelve million, twenty thousand, eleven".