10221120121011 has 4 divisors (see below), whose sum is σ = 13628160161352. Its totient is φ = 6814080080672.

The previous prime is 10221120120983. The next prime is 10221120121049. The reversal of 10221120121011 is 11012102112201.

It is a happy number.

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 10221120121011 - 2⁹ = 10221120120499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10221120121711) 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, 1703520020166 + ... + 1703520020171.

It is an arithmetic number, because the mean of its divisors is an integer number (3407040040338).

Almost surely, 2^{10221120121011} is an apocalyptic number.

10221120121011 is a deficient number, since it is larger than the sum of its proper divisors (3407040040341).

10221120121011 is an equidigital number, since it uses as much as digits as its factorization.

10221120121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407040040340.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10221120121011 its reverse (11012102112201), we get a palindrome (21233222233212).

The spelling of 10221120121011 in words is "ten trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twenty-one thousand, eleven".