10221021212011 has 4 divisors (see below), whose sum is σ = 10822257753912. Its totient is φ = 9619784670112.

The previous prime is 10221021211981. The next prime is 10221021212141. The reversal of 10221021212011 is 11021212012201.

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

It is a cyclic number.

It is not a de Polignac number, because 10221021212011 - 2¹⁹ = 10221020687723 is a prime.

It is a super-2 number, since 2×10221021212011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221021212911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300618270925 + ... + 300618270958.

It is an arithmetic number, because the mean of its divisors is an integer number (2705564438478).

Almost surely, 2^{10221021212011} is an apocalyptic number.

10221021212011 is a deficient number, since it is larger than the sum of its proper divisors (601236541901).

10221021212011 is an equidigital number, since it uses as much as digits as its factorization.

10221021212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601236541900.

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

Adding to 10221021212011 its reverse (11021212012201), we get a palindrome (21242233224212).

The spelling of 10221021212011 in words is "ten trillion, two hundred twenty-one billion, twenty-one million, two hundred twelve thousand, eleven".