201221011002190 has 16 divisors (see below), whose sum is σ = 362371869730800. Its totient is φ = 80449726639360.

The previous prime is 201221011002107. The next prime is 201221011002191. The reversal of 201221011002190 is 91200110122102.

201221011002190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201221011002190² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221011002191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4834698340 + ... + 4834739959.

It is an arithmetic number, because the mean of its divisors is an integer number (22648241858175).

Almost surely, 2^{201221011002190} is an apocalyptic number.

201221011002190 is a deficient number, since it is larger than the sum of its proper divisors (161150858728610).

201221011002190 is a wasteful number, since it uses less digits than its factorization.

201221011002190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9669440387.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 201221011002190 its reverse (91200110122102), we get a palindrome (292421121124292).

The spelling of 201221011002190 in words is "two hundred one trillion, two hundred twenty-one billion, eleven million, two thousand, one hundred ninety".