11022122021021 has 4 divisors (see below), whose sum is σ = 11032792033692. Its totient is φ = 11011452008352.

The previous prime is 11022122020993. The next prime is 11022122021047. The reversal of 11022122021021 is 12012022122011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10913805996025 + 108316024996 = 3303605^2 + 329114^2 .

It is a cyclic number.

It is not a de Polignac number, because 11022122021021 - 2⁴² = 6624075509917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022122021921) 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, 5335004786 + ... + 5335006851.

It is an arithmetic number, because the mean of its divisors is an integer number (2758198008423).

Almost surely, 2^{11022122021021} is an apocalyptic number.

It is an amenable number.

11022122021021 is a deficient number, since it is larger than the sum of its proper divisors (10670012671).

11022122021021 is a wasteful number, since it uses less digits than its factorization.

11022122021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10670012670.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11022122021021 its reverse (12012022122011), we get a palindrome (23034144143032).

The spelling of 11022122021021 in words is "eleven trillion, twenty-two billion, one hundred twenty-two million, twenty-one thousand, twenty-one".