10010211211221 has 16 divisors (see below), whose sum is σ = 14403151292544. Its totient is φ = 6147480826944.

The previous prime is 10010211211211. The next prime is 10010211211241. The reversal of 10010211211221 is 12211211201001.

It is a happy number.

It is not a de Polignac number, because 10010211211221 - 2⁶ = 10010211211157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10010211211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010211211211) 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, 263504706 + ... + 263542691.

It is an arithmetic number, because the mean of its divisors is an integer number (900196955784).

Almost surely, 2^{10010211211221} is an apocalyptic number.

It is an amenable number.

10010211211221 is a deficient number, since it is larger than the sum of its proper divisors (4392940081323).

10010211211221 is a wasteful number, since it uses less digits than its factorization.

10010211211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527047900.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10010211211221 its reverse (12211211201001), we get a palindrome (22221422412222).

The spelling of 10010211211221 in words is "ten trillion, ten billion, two hundred eleven million, two hundred eleven thousand, two hundred twenty-one".