10221121011 has 16 divisors (see below), whose sum is σ = 14139214848. Its totient is φ = 6560786400.

The previous prime is 10221121007. The next prime is 10221121037. The reversal of 10221121011 is 11012112201.

It is not a de Polignac number, because 10221121011 - 2² = 10221121007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10221121081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260625 + ... + 297266.

It is an arithmetic number, because the mean of its divisors is an integer number (883700928).

Almost surely, 2^10221121011 is an apocalyptic number.

10221121011 is a deficient number, since it is larger than the sum of its proper divisors (3918093837).

10221121011 is a wasteful number, since it uses less digits than its factorization.

10221121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558122.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10221121011 its reverse (11012112201), we get a palindrome (21233233212).

The spelling of 10221121011 in words is "ten billion, two hundred twenty-one million, one hundred twenty-one thousand, eleven".