10210020001221 has 8 divisors (see below), whose sum is σ = 13614295236064. Its totient is φ = 6806212383600.

The previous prime is 10210020001163. The next prime is 10210020001289. The reversal of 10210020001221 is 12210002001201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10210020001221 - 2⁹ = 10210020000709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10210020001197 and 10210020001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210025001221) 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, 116853355 + ... + 116940696.

It is an arithmetic number, because the mean of its divisors is an integer number (1701786904508).

Almost surely, 2^{10210020001221} is an apocalyptic number.

It is an amenable number.

10210020001221 is a deficient number, since it is larger than the sum of its proper divisors (3404275234843).

10210020001221 is a wasteful number, since it uses less digits than its factorization.

10210020001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233808611.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10210020001221 its reverse (12210002001201), we get a palindrome (22420022002422).

The spelling of 10210020001221 in words is "ten trillion, two hundred ten billion, twenty million, one thousand, two hundred twenty-one".