10202121222111 has 48 divisors (see below), whose sum is σ = 18627296460864. Its totient is φ = 5235897065472.

The previous prime is 10202121222061. The next prime is 10202121222119. The reversal of 10202121222111 is 11122212120201.

10202121222111 is a `hidden beast` number, since 10 + 202 + 121 + 222 + 111 = 666.

It is not a de Polignac number, because 10202121222111 - 2²⁷ = 10201987004383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202121222119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168304866 + ... + 168365471.

It is an arithmetic number, because the mean of its divisors is an integer number (388068676268).

Almost surely, 2^{10202121222111} is an apocalyptic number.

10202121222111 is a deficient number, since it is larger than the sum of its proper divisors (8425175238753).

10202121222111 is a wasteful number, since it uses less digits than its factorization.

10202121222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336670400 (or 336670397 counting only the distinct ones).

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

Adding to 10202121222111 its reverse (11122212120201), we get a palindrome (21324333342312).

The spelling of 10202121222111 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred eleven".