11220021012121 has 8 divisors (see below), whose sum is σ = 11768510442240. Its totient is φ = 10676586784512.

The previous prime is 11220021012103. The next prime is 11220021012163. The reversal of 11220021012121 is 12121012002211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11220021012121 - 2¹⁵ = 11220020979353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220021012095 and 11220021012104.

It is not an unprimeable number, because it can be changed into a prime (11220021012521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1263796081 + ... + 1263804958.

It is an arithmetic number, because the mean of its divisors is an integer number (1471063805280).

Almost surely, 2^{11220021012121} is an apocalyptic number.

It is an amenable number.

11220021012121 is a deficient number, since it is larger than the sum of its proper divisors (548489430119).

11220021012121 is a wasteful number, since it uses less digits than its factorization.

11220021012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527601255.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11220021012121 its reverse (12121012002211), we get a palindrome (23341033014332).

The spelling of 11220021012121 in words is "eleven trillion, two hundred twenty billion, twenty-one million, twelve thousand, one hundred twenty-one".