221001000201010 has 32 divisors (see below), whose sum is σ = 406375543305072. Its totient is φ = 86509836430080.

The previous prime is 221001000200993. The next prime is 221001000201019. The reversal of 221001000201010 is 10102000100122.

It can be written as a sum of positive squares in 8 ways, for example, as 168410496972249 + 52590503228761 = 12977307^2 + 7251931^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (221001000201019) 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, 919414657 + ... + 919654996.

Almost surely, 2^{221001000201010} is an apocalyptic number.

221001000201010 is a deficient number, since it is larger than the sum of its proper divisors (185374543104062).

221001000201010 is a wasteful number, since it uses less digits than its factorization.

221001000201010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839069918.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221001000201010 its reverse (10102000100122), we get a palindrome (231103000301132).

The spelling of 221001000201010 in words is "two hundred twenty-one trillion, one billion, two hundred one thousand, ten".