221200211020999 has 16 divisors (see below), whose sum is σ = 253186814707200. Its totient is φ = 189310257458784.

The previous prime is 221200211020897. The next prime is 221200211021003. The reversal of 221200211020999 is 999020112002122.

It is not a de Polignac number, because 221200211020999 - 2²¹ = 221200208923847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200211020499) 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, 485193534 + ... + 485649220.

It is an arithmetic number, because the mean of its divisors is an integer number (15824175919200).

Almost surely, 2^{221200211020999} is an apocalyptic number.

221200211020999 is a deficient number, since it is larger than the sum of its proper divisors (31986603686201).

221200211020999 is a wasteful number, since it uses less digits than its factorization.

221200211020999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561582.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 221200211020999 in words is "two hundred twenty-one trillion, two hundred billion, two hundred eleven million, twenty thousand, nine hundred ninety-nine".