201221110010 has 16 divisors (see below), whose sum is σ = 362203380000. Its totient is φ = 80487248016.

The previous prime is 201221109967. The next prime is 201221110021. The reversal of 201221110010 is 10011122102.

It is a super-2 number, since 2×201221110010² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201221109973 and 201221110000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924641 + ... + 1121339.

It is an arithmetic number, because the mean of its divisors is an integer number (22637711250).

Almost surely, 2^201221110010 is an apocalyptic number.

201221110010 is a deficient number, since it is larger than the sum of its proper divisors (160982269990).

201221110010 is a wasteful number, since it uses less digits than its factorization.

201221110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299005.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201221110010 its reverse (10011122102), we get a palindrome (211232232112).

The spelling of 201221110010 in words is "two hundred one billion, two hundred twenty-one million, one hundred ten thousand, ten".