11021021122121 has 64 divisors (see below), whose sum is σ = 12057045073920. Its totient is φ = 10051620583680.

The previous prime is 11021021122087. The next prime is 11021021122127. The reversal of 11021021122121 is 12122112012011.

It is not a de Polignac number, because 11021021122121 - 2⁴² = 6622974611017 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 11021021122121.

It is not an unprimeable number, because it can be changed into a prime (11021021122127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1996920800 + ... + 1996926318.

It is an arithmetic number, because the mean of its divisors is an integer number (188391329280).

Almost surely, 2^{11021021122121} is an apocalyptic number.

It is an amenable number.

11021021122121 is a deficient number, since it is larger than the sum of its proper divisors (1036023951799).

11021021122121 is a wasteful number, since it uses less digits than its factorization.

11021021122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6054.

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

Adding to 11021021122121 its reverse (12122112012011), we get a palindrome (23143133134132).

The spelling of 11021021122121 in words is "eleven trillion, twenty-one billion, twenty-one million, one hundred twenty-two thousand, one hundred twenty-one".