10202121022111 has 4 divisors (see below), whose sum is σ = 10259116111800. Its totient is φ = 10145125932424.

The previous prime is 10202121022087. The next prime is 10202121022147. The reversal of 10202121022111 is 11122012120201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202121022111 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 (10202121322111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28497544576 + ... + 28497544933.

It is an arithmetic number, because the mean of its divisors is an integer number (2564779027950).

Almost surely, 2^{10202121022111} is an apocalyptic number.

10202121022111 is a deficient number, since it is larger than the sum of its proper divisors (56995089689).

10202121022111 is an equidigital number, since it uses as much as digits as its factorization.

10202121022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56995089688.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10202121022111 its reverse (11122012120201), we get a palindrome (21324133142312).

The spelling of 10202121022111 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, twenty-two thousand, one hundred eleven".