11000012222121 has 64 divisors (see below), whose sum is σ = 16017811907328. Its totient is φ = 6674568219648.

The previous prime is 11000012222093. The next prime is 11000012222123. The reversal of 11000012222121 is 12122221000011.

It is not a de Polignac number, because 11000012222121 - 2¹⁸ = 11000011959977 is a prime.

It is a super-2 number, since 2×11000012222121² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11000012222121.

It is not an unprimeable number, because it can be changed into a prime (11000012222123) 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, 421330350 + ... + 421356456.

It is an arithmetic number, because the mean of its divisors is an integer number (250278311052).

Almost surely, 2^{11000012222121} is an apocalyptic number.

It is an amenable number.

11000012222121 is a deficient number, since it is larger than the sum of its proper divisors (5017799685207).

11000012222121 is a wasteful number, since it uses less digits than its factorization.

11000012222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26810.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11000012222121 its reverse (12122221000011), we get a palindrome (23122233222132).

The spelling of 11000012222121 in words is "eleven trillion, twelve million, two hundred twenty-two thousand, one hundred twenty-one".