1011011200221 has 64 divisors (see below), whose sum is σ = 1522795438080. Its totient is φ = 591261200640.

The previous prime is 1011011200217. The next prime is 1011011200229. The reversal of 1011011200221 is 1220021101101.

It is not a de Polignac number, because 1011011200221 - 2² = 1011011200217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011011200197 and 1011011200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011011200229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 88500916 + ... + 88512338.

It is an arithmetic number, because the mean of its divisors is an integer number (23793678720).

Almost surely, 2^{1011011200221} is an apocalyptic number.

1011011200221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011011200221 is a deficient number, since it is larger than the sum of its proper divisors (511784237859).

1011011200221 is a wasteful number, since it uses less digits than its factorization.

1011011200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12066.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1011011200221 its reverse (1220021101101), we get a palindrome (2231032301322).

The spelling of 1011011200221 in words is "one trillion, eleven billion, eleven million, two hundred thousand, two hundred twenty-one".