10202121221211 has 12 divisors (see below), whose sum is σ = 14736686080480. Its totient is φ = 6801280873200.

The previous prime is 10202121221093. The next prime is 10202121221219. The reversal of 10202121221211 is 11212212120201.

10202121221211 is a `hidden beast` number, since 1 + 0 + 20 + 212 + 1 + 221 + 211 = 666.

It is not a de Polignac number, because 10202121221211 - 2⁴¹ = 8003097965659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10202121221219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10620256 + ... + 11540973.

Almost surely, 2^{10202121221211} is an apocalyptic number.

10202121221211 is a deficient number, since it is larger than the sum of its proper divisors (4534564859269).

10202121221211 is a wasteful number, since it uses less digits than its factorization.

10202121221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22212386 (or 22212383 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10202121221211 its reverse (11212212120201), we get a palindrome (21414333341412).

The spelling of 10202121221211 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".