221021200001011 has 16 divisors (see below), whose sum is σ = 234354991138848. Its totient is φ = 207724390387200.

The previous prime is 221021200000903. The next prime is 221021200001059. The reversal of 221021200001011 is 110100002120122.

It is a cyclic number.

It is not a de Polignac number, because 221021200001011 - 2¹³ = 221021199992819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221021200000982 and 221021200001000.

It is not an unprimeable number, because it can be changed into a prime (221021200001411) 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, 223443141 + ... + 224430121.

It is an arithmetic number, because the mean of its divisors is an integer number (14647186946178).

Almost surely, 2^{221021200001011} is an apocalyptic number.

221021200001011 is a deficient number, since it is larger than the sum of its proper divisors (13333791137837).

221021200001011 is a wasteful number, since it uses less digits than its factorization.

221021200001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005702.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221021200001011 its reverse (110100002120122), we get a palindrome (331121202121133).

The spelling of 221021200001011 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred million, one thousand, eleven".