11121202012121 has 8 divisors (see below), whose sum is σ = 11248000321824. Its totient is φ = 10994827070080.

The previous prime is 11121202012097. The next prime is 11121202012133. The reversal of 11121202012121 is 12121020212111.

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-11121202012121 is a prime.

It is a super-2 number, since 2×11121202012121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11121202012121.

It is not an unprimeable number, because it can be changed into a prime (11121202072121) 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, 105789080 + ... + 105894153.

It is an arithmetic number, because the mean of its divisors is an integer number (1406000040228).

Almost surely, 2^{11121202012121} is an apocalyptic number.

It is an amenable number.

11121202012121 is a deficient number, since it is larger than the sum of its proper divisors (126798309703).

11121202012121 is a wasteful number, since it uses less digits than its factorization.

11121202012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211683831.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11121202012121 its reverse (12121020212111), we get a palindrome (23242222224232).

The spelling of 11121202012121 in words is "eleven trillion, one hundred twenty-one billion, two hundred two million, twelve thousand, one hundred twenty-one".