1121200002221 has 8 divisors (see below), whose sum is σ = 1219401070104. Its totient is φ = 1024706779200.

The previous prime is 1121200002199. The next prime is 1121200002229. The reversal of 1121200002221 is 1222000021211.

It can be written as a sum of positive squares in 4 ways, for example, as 250690476100 + 870509526121 = 500690^2 + 933011^2 .

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

It is not a de Polignac number, because 1121200002221 - 2¹⁴ = 1121199985837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121200002196 and 1121200002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121200002229) 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, 426959846 + ... + 426962471.

It is an arithmetic number, because the mean of its divisors is an integer number (152425133763).

Almost surely, 2^{1121200002221} is an apocalyptic number.

It is an amenable number.

1121200002221 is a deficient number, since it is larger than the sum of its proper divisors (98201067883).

1121200002221 is a wasteful number, since it uses less digits than its factorization.

1121200002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853922431.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1121200002221 its reverse (1222000021211), we get a palindrome (2343200023432).

The spelling of 1121200002221 in words is "one trillion, one hundred twenty-one billion, two hundred million, two thousand, two hundred twenty-one".