10221202121111 has 8 divisors (see below), whose sum is σ = 10237019123760. Its totient is φ = 10205385622272.

The previous prime is 10221202121107. The next prime is 10221202121159. The reversal of 10221202121111 is 11112120212201.

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

It is a cyclic number.

It is not a de Polignac number, because 10221202121111 - 2² = 10221202121107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10221202121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221202121191) 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, 74542631 + ... + 74679623.

It is an arithmetic number, because the mean of its divisors is an integer number (1279627390470).

Almost surely, 2^{10221202121111} is an apocalyptic number.

10221202121111 is a deficient number, since it is larger than the sum of its proper divisors (15817002649).

10221202121111 is a wasteful number, since it uses less digits than its factorization.

10221202121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251905.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10221202121111 its reverse (11112120212201), we get a palindrome (21333322333312).

The spelling of 10221202121111 in words is "ten trillion, two hundred twenty-one billion, two hundred two million, one hundred twenty-one thousand, one hundred eleven".