210220221212011 has 4 divisors (see below), whose sum is σ = 212148847094800. Its totient is φ = 208291595329224.

The previous prime is 210220221211997. The next prime is 210220221212033. The reversal of 210220221212011 is 110212122022012.

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 210220221212011 - 2¹⁹ = 210220220687723 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 210220221212011.

It is not an unprimeable number, because it can be changed into a prime (210220221212711) 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, 964312941231 + ... + 964312941448.

It is an arithmetic number, because the mean of its divisors is an integer number (53037211773700).

Almost surely, 2^{210220221212011} is an apocalyptic number.

210220221212011 is a deficient number, since it is larger than the sum of its proper divisors (1928625882789).

210220221212011 is a wasteful number, since it uses less digits than its factorization.

210220221212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928625882788.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210220221212011 its reverse (110212122022012), we get a palindrome (320432343234023).

The spelling of 210220221212011 in words is "two hundred ten trillion, two hundred twenty billion, two hundred twenty-one million, two hundred twelve thousand, eleven".