10011100222121 has 4 divisors (see below), whose sum is σ = 10011269969412. Its totient is φ = 10010930474832.

The previous prime is 10011100222099. The next prime is 10011100222147. The reversal of 10011100222121 is 12122200111001.

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 6144622957225 + 3866477264896 = 2478835^2 + 1966336^2 .

It is a cyclic number.

It is not a de Polignac number, because 10011100222121 - 2⁴² = 5613053711017 is a prime.

It is a super-2 number, since 2×10011100222121² (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 = 10011100222096 and 10011100222105.

It is not an unprimeable number, because it can be changed into a prime (10011100422121) 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, 84785150 + ... + 84903143.

It is an arithmetic number, because the mean of its divisors is an integer number (2502817492353).

Almost surely, 2^{10011100222121} is an apocalyptic number.

It is an amenable number.

10011100222121 is a deficient number, since it is larger than the sum of its proper divisors (169747291).

10011100222121 is an equidigital number, since it uses as much as digits as its factorization.

10011100222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169747290.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10011100222121 its reverse (12122200111001), we get a palindrome (22133300333122).

The spelling of 10011100222121 in words is "ten trillion, eleven billion, one hundred million, two hundred twenty-two thousand, one hundred twenty-one".