10211002001221 has 16 divisors (see below), whose sum is σ = 12288123794560. Its totient is φ = 8288797884480.

The previous prime is 10211002001203. The next prime is 10211002001269. The reversal of 10211002001221 is 12210020011201.

10211002001221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10211002001221 - 2¹⁹ = 10211001476933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211002002221) 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, 12771870 + ... + 13547791.

It is an arithmetic number, because the mean of its divisors is an integer number (768007737160).

Almost surely, 2^{10211002001221} is an apocalyptic number.

It is an amenable number.

10211002001221 is a deficient number, since it is larger than the sum of its proper divisors (2077121793339).

10211002001221 is a wasteful number, since it uses less digits than its factorization.

10211002001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26322604.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10211002001221 its reverse (12210020011201), we get a palindrome (22421022012422).

The spelling of 10211002001221 in words is "ten trillion, two hundred eleven billion, two million, one thousand, two hundred twenty-one".