11021011121021 has 16 divisors (see below), whose sum is σ = 12580843650048. Its totient is φ = 9564384024000.

The previous prime is 11021011121011. The next prime is 11021011121027. The reversal of 11021011121021 is 12012111012011.

It is a cyclic number.

It is not a de Polignac number, because 11021011121021 - 2¹⁰ = 11021011119997 is a prime.

It is a super-2 number, since 2×11021011121021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021011120987 and 11021011121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021011121027) 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, 255437405 + ... + 255480546.

It is an arithmetic number, because the mean of its divisors is an integer number (786302728128).

Almost surely, 2^{11021011121021} is an apocalyptic number.

11021011121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11021011121021 is a deficient number, since it is larger than the sum of its proper divisors (1559832529027).

11021011121021 is a wasteful number, since it uses less digits than its factorization.

11021011121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510918052.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11021011121021 its reverse (12012111012011), we get a palindrome (23033122133032).

The spelling of 11021011121021 in words is "eleven trillion, twenty-one billion, eleven million, one hundred twenty-one thousand, twenty-one".