1210202211121 has 8 divisors (see below), whose sum is σ = 1216913177088. Its totient is φ = 1203495150000.

The previous prime is 1210202211091. The next prime is 1210202211139. The reversal of 1210202211121 is 1211122020121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210202211121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210202211095 and 1210202211104.

It is not an unprimeable number, because it can be changed into a prime (1210202211181) 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, 353550 + ... + 1595431.

It is an arithmetic number, because the mean of its divisors is an integer number (152114147136).

Almost surely, 2^{1210202211121} is an apocalyptic number.

It is an amenable number.

1210202211121 is a deficient number, since it is larger than the sum of its proper divisors (6710965967).

1210202211121 is a wasteful number, since it uses less digits than its factorization.

1210202211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952423.

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

Adding to 1210202211121 its reverse (1211122020121), we get a palindrome (2421324231242).

The spelling of 1210202211121 in words is "one trillion, two hundred ten billion, two hundred two million, two hundred eleven thousand, one hundred twenty-one".