10211202001221 has 32 divisors (see below), whose sum is σ = 14893241825280. Its totient is φ = 6185545953984.

The previous prime is 10211202001211. The next prime is 10211202001271. The reversal of 10211202001221 is 12210020211201.

It is not a de Polignac number, because 10211202001221 - 2⁷ = 10211202001093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10211202001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211202001211) 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, 6939931 + ... + 8281608.

It is an arithmetic number, because the mean of its divisors is an integer number (465413807040).

Almost surely, 2^{10211202001221} is an apocalyptic number.

It is an amenable number.

10211202001221 is a deficient number, since it is larger than the sum of its proper divisors (4682039824059).

10211202001221 is a wasteful number, since it uses less digits than its factorization.

10211202001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15221825.

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

Adding to 10211202001221 its reverse (12210020211201), we get a palindrome (22421222212422).

The spelling of 10211202001221 in words is "ten trillion, two hundred eleven billion, two hundred two million, one thousand, two hundred twenty-one".