221001220011201 has 32 divisors (see below), whose sum is σ = 337445024974848. Its totient is φ = 126030956002560.

The previous prime is 221001220011193. The next prime is 221001220011211. The reversal of 221001220011201 is 102110022100122.

It is not a de Polignac number, because 221001220011201 - 2³ = 221001220011193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221001220011211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315980841 + ... + 316679481.

It is an arithmetic number, because the mean of its divisors is an integer number (10545157030464).

Almost surely, 2^{221001220011201} is an apocalyptic number.

221001220011201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221001220011201 is a deficient number, since it is larger than the sum of its proper divisors (116443804963647).

221001220011201 is a wasteful number, since it uses less digits than its factorization.

221001220011201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729101.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221001220011201 its reverse (102110022100122), we get a palindrome (323111242111323).

The spelling of 221001220011201 in words is "two hundred twenty-one trillion, one billion, two hundred twenty million, eleven thousand, two hundred one".