1202221101121 has 4 divisors (see below), whose sum is σ = 1231543567044. Its totient is φ = 1172898635200.

The previous prime is 1202221101091. The next prime is 1202221101127. The reversal of 1202221101121 is 1211011222021.

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 559562345521 + 642658755600 = 748039^2 + 801660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202221101121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202221101095 and 1202221101104.

It is not an unprimeable number, because it can be changed into a prime (1202221101127) 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, 14661232900 + ... + 14661232981.

It is an arithmetic number, because the mean of its divisors is an integer number (307885891761).

Almost surely, 2^{1202221101121} is an apocalyptic number.

It is an amenable number.

1202221101121 is a deficient number, since it is larger than the sum of its proper divisors (29322465923).

1202221101121 is an equidigital number, since it uses as much as digits as its factorization.

1202221101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29322465922.

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

Adding to 1202221101121 its reverse (1211011222021), we get a palindrome (2413232323142).

The spelling of 1202221101121 in words is "one trillion, two hundred two billion, two hundred twenty-one million, one hundred one thousand, one hundred twenty-one".