220021010212211 has 4 divisors (see below), whose sum is σ = 236945703305472. Its totient is φ = 203096317118952.

The previous prime is 220021010212189. The next prime is 220021010212219. The reversal of 220021010212211 is 112212010120022.

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 220021010212211 - 2²⁶ = 220020943103347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220021010212211.

It is not an unprimeable number, because it can be changed into a prime (220021010212219) 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, 8462346546611 + ... + 8462346546636.

It is an arithmetic number, because the mean of its divisors is an integer number (59236425826368).

Almost surely, 2^{220021010212211} is an apocalyptic number.

220021010212211 is a deficient number, since it is larger than the sum of its proper divisors (16924693093261).

220021010212211 is a wasteful number, since it uses less digits than its factorization.

220021010212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16924693093260.

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

Adding to 220021010212211 its reverse (112212010120022), we get a palindrome (332233020332233).

The spelling of 220021010212211 in words is "two hundred twenty trillion, twenty-one billion, ten million, two hundred twelve thousand, two hundred eleven".